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Posted to commits@ignite.apache.org by sb...@apache.org on 2017/01/11 14:32:14 UTC

[1/2] ignite git commit: Minor.

Repository: ignite
Updated Branches:
  refs/heads/ignite-gg-11810 b81c30acb -> 1038a0b48


http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/CacheVersionIO.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/CacheVersionIO.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/CacheVersionIO.java
index fac3e20..8a630cc 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/CacheVersionIO.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/CacheVersionIO.java
@@ -78,25 +78,25 @@ public class CacheVersionIO {
     }
 
     /**
-     * @param buf Byte buffer.
+     * @param addr Write address.
      * @param ver Version to write.
      * @param allowNull Is {@code null} version allowed.
      */
-    public static void write(long buf, GridCacheVersion ver, boolean allowNull) {
+    public static void write(long addr, GridCacheVersion ver, boolean allowNull) {
         if (ver == null) {
             if (allowNull)
-                PageUtils.putByte(buf, 0, NULL_PROTO_VER);
+                PageUtils.putByte(addr, 0, NULL_PROTO_VER);
             else
                 throw new IllegalStateException("Cache version is null");
         }
         else {
             byte protoVer = 1; // Version of serialization protocol.
 
-            PageUtils.putByte(buf, 0, protoVer);
-            PageUtils.putInt(buf, 1, ver.topologyVersion());
-            PageUtils.putInt(buf, 5, ver.nodeOrderAndDrIdRaw());
-            PageUtils.putLong(buf, 9, ver.globalTime());
-            PageUtils.putLong(buf, 17, ver.order());
+            PageUtils.putByte(addr, 0, protoVer);
+            PageUtils.putInt(addr, 1, ver.topologyVersion());
+            PageUtils.putInt(addr, 5, ver.nodeOrderAndDrIdRaw());
+            PageUtils.putLong(addr, 9, ver.globalTime());
+            PageUtils.putLong(addr, 17, ver.order());
         }
     }
 
@@ -165,48 +165,23 @@ public class CacheVersionIO {
     }
 
     /**
-     * Gets needed buffer size to read the whole version instance.
-     * Does not change buffer position.
-     *
-     * @param buf Buffer.
-     * @param allowNull Is {@code null} version allowed.
-     * @return Size of serialized version.
-     * @throws IgniteCheckedException If failed.
-     */
-    public static int readSize(long buf, boolean allowNull) throws IgniteCheckedException {
-        byte protoVer = checkProtocolVersion(PageUtils.getByte(buf, 0), allowNull);
-
-        switch (protoVer) {
-            case NULL_PROTO_VER:
-                return NULL_SIZE;
-
-            case 1:
-                return SIZE_V1;
-
-            default:
-                throw new IllegalStateException();
-        }
-    }
-
-    /**
-     * Reads GridCacheVersion instance from the given buffer. Moves buffer's position by the number of used
-     * bytes.
+     * Reads GridCacheVersion instance from the given address.
      *
-     * @param buf Byte buffer.
+     * @param pageAddr Page address.
      * @param allowNull Is {@code null} version allowed.
      * @return Version.
      * @throws IgniteCheckedException If failed.
      */
-    public static GridCacheVersion read(long buf, boolean allowNull) throws IgniteCheckedException {
-        byte protoVer = checkProtocolVersion(PageUtils.getByte(buf, 0), allowNull);
+    public static GridCacheVersion read(long pageAddr, boolean allowNull) throws IgniteCheckedException {
+        byte protoVer = checkProtocolVersion(PageUtils.getByte(pageAddr, 0), allowNull);
 
         if (protoVer == NULL_PROTO_VER)
             return null;
 
-        int topVer = PageUtils.getInt(buf, 1);
-        int nodeOrderDrId = PageUtils.getInt(buf, 5);
-        long globalTime = PageUtils.getLong(buf, 9);
-        long order = PageUtils.getLong(buf, 17);
+        int topVer = PageUtils.getInt(pageAddr, 1);
+        int nodeOrderDrId = PageUtils.getInt(pageAddr, 5);
+        long globalTime = PageUtils.getLong(pageAddr, 9);
+        long order = PageUtils.getLong(pageAddr, 17);
 
         return new GridCacheVersion(topVer, nodeOrderDrId, globalTime, order);
     }

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/IOVersions.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/IOVersions.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/IOVersions.java
index f5eb4b0..428cb3f 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/IOVersions.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/IOVersions.java
@@ -78,16 +78,16 @@ public final class IOVersions<V extends PageIO> {
     }
 
     /**
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @return IO.
      */
-    public V forPage(long buf) {
-        int ver = PageIO.getVersion(buf);
+    public V forPage(long pageAddr) {
+        int ver = PageIO.getVersion(pageAddr);
 
         V res = forVersion(ver);
 
-        assert res.getType() == PageIO.getType(buf) : "resType=" + res.getType() +
-            ", pageType=" + PageIO.getType(buf);
+        assert res.getType() == PageIO.getType(pageAddr) : "resType=" + res.getType() +
+            ", pageType=" + PageIO.getType(pageAddr);
 
         return res;
     }

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/PageIO.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/PageIO.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/PageIO.java
index 58f2b66b3..5ffc1b2 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/PageIO.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/PageIO.java
@@ -39,7 +39,7 @@ import org.apache.ignite.internal.processors.cache.database.tree.util.PageLockLi
  *    static methods (like {@code {@link #getPageId(long)}}) intentionally:
  *    this base format can not be changed between versions.
  *
- * 2. IO must correctly override {@link #initNewPage(long, long)} method and call super.
+ * 2. IO must correctly override {@link #initNewPage(long, long, int)} method and call super.
  *    We have logic that relies on this behavior.
  *
  * 3. Page IO type ID constant must be declared in this class to have a list of all the
@@ -200,11 +200,11 @@ public abstract class PageIO {
     }
 
     /**
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @return Page ID.
      */
-    public static long getPageId(long buf) {
-        return PageUtils.getLong(buf, PAGE_ID_OFF);
+    public static long getPageId(long pageAddr) {
+        return PageUtils.getLong(pageAddr, PAGE_ID_OFF);
     }
 
     /**

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/util/PageHandler.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/util/PageHandler.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/util/PageHandler.java
index 222a6a0..3e6e637 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/util/PageHandler.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/util/PageHandler.java
@@ -285,6 +285,13 @@ public abstract class PageHandler<X, R> {
             (page.fullPageWalRecordPolicy() == FALSE || page.isDirty());
     }
 
+    /**
+     * @param srcAddr Source.
+     * @param dstAddr Destination.
+     * @param srcOff Source offset in bytes.
+     * @param dstOff Destination offset in bytes.
+     * @param cnt Bytes count to copy.
+     */
     public static void copyMemory(long srcAddr, long dstAddr, long srcOff, long dstOff, long cnt) {
         GridUnsafe.copyMemory(null, srcAddr + srcOff, null, dstAddr + dstOff, cnt);
     }

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/util/PageLockListener.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/util/PageLockListener.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/util/PageLockListener.java
index 8ee4e01..07cdd43 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/util/PageLockListener.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/util/PageLockListener.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.processors.cache.database.tree.util;
 
-import java.nio.ByteBuffer;
 import org.apache.ignite.internal.pagemem.Page;
 
 /**
@@ -31,15 +30,15 @@ public interface PageLockListener {
 
     /**
      * @param page Page.
-     * @param buf Buffer or {@code null} if attempt to lock failed.
+     * @param pageAddr Page address or {@code 0} if attempt to lock failed.
      */
-    public void onWriteLock(Page page, long buf);
+    public void onWriteLock(Page page, long pageAddr);
 
     /**
      * @param page Page.
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      */
-    public void onWriteUnlock(Page page, long buf);
+    public void onWriteUnlock(Page page, long pageAddr);
 
     /**
      * @param page Page.
@@ -48,13 +47,13 @@ public interface PageLockListener {
 
     /**
      * @param page Page.
-     * @param buf Buffer or {@code null} if attempt to lock failed.
+     * @param pageAddr Page address or {@code 0} if attempt to lock failed.
      */
-    public void onReadLock(Page page, long buf);
+    public void onReadLock(Page page, long pageAddr);
 
     /**
      * @param page Page.
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      */
-    public void onReadUnlock(Page page, long buf);
+    public void onReadUnlock(Page page, long pageAddr);
 }

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/util/GridUnsafe.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/GridUnsafe.java b/modules/core/src/main/java/org/apache/ignite/internal/util/GridUnsafe.java
index eb5a27f..783ab96 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/GridUnsafe.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/GridUnsafe.java
@@ -46,7 +46,7 @@ import sun.misc.Unsafe;
  */
 public abstract class GridUnsafe {
     /** Unsafe. */
-    public static final Unsafe UNSAFE = unsafe();
+    private static final Unsafe UNSAFE = unsafe();
 
     /** Unaligned flag. */
     private static final boolean UNALIGNED = unaligned();

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteIncompleteCacheObjectSelfTest.java
----------------------------------------------------------------------
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteIncompleteCacheObjectSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteIncompleteCacheObjectSelfTest.java
index 4aa72cb..32503d2 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteIncompleteCacheObjectSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteIncompleteCacheObjectSelfTest.java
@@ -123,7 +123,7 @@ public class IgniteIncompleteCacheObjectSelfTest extends GridCommonAbstractTest
 
         /** {@inheritDoc} */
         @Override public int putValue(long addr) throws IgniteCheckedException {
-            return 0;
+            throw new UnsupportedOperationException();
         }
 
         /** {@inheritDoc} */

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/test/java/org/apache/ignite/internal/processors/database/BPlusTreeReuseSelfTest.java
----------------------------------------------------------------------
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/database/BPlusTreeReuseSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/database/BPlusTreeReuseSelfTest.java
index e1d0da6..5f38bb0 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/database/BPlusTreeReuseSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/database/BPlusTreeReuseSelfTest.java
@@ -90,15 +90,15 @@ public class BPlusTreeReuseSelfTest extends BPlusTreeSelfTest {
         }
 
         /** {@inheritDoc} */
-        @Override public void onReadLock(Page page, long buf) {
-            checkPageId(page, buf);
+        @Override public void onReadLock(Page page, long pageAddr) {
+            checkPageId(page, pageAddr);
 
             assertTrue(readLocks.get().add(page.id()));
         }
 
         /** {@inheritDoc} */
-        @Override public void onReadUnlock(Page page, long buf) {
-            checkPageId(page, buf);
+        @Override public void onReadUnlock(Page page, long pageAddr) {
+            checkPageId(page, pageAddr);
 
             assertTrue(readLocks.get().remove(page.id()));
         }
@@ -109,18 +109,18 @@ public class BPlusTreeReuseSelfTest extends BPlusTreeSelfTest {
         }
 
         /** {@inheritDoc} */
-        @Override public void onWriteLock(Page page, long buf) {
-            if (buf == 0L)
+        @Override public void onWriteLock(Page page, long pageAddr) {
+            if (pageAddr == 0L)
                 return; // Failed to lock.
 
-            checkPageId(page, buf);
+            checkPageId(page, pageAddr);
 
             assertTrue(writeLocks.get().add(page.id()));
         }
 
         /** {@inheritDoc} */
-        @Override public void onWriteUnlock(Page page, long buf) {
-            assertEquals(effectivePageId(page.id()), effectivePageId(PageIO.getPageId(buf)));
+        @Override public void onWriteUnlock(Page page, long pageAddr) {
+            assertEquals(effectivePageId(page.id()), effectivePageId(PageIO.getPageId(pageAddr)));
 
             assertTrue(writeLocks.get().remove(page.id()));
         }

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/test/java/org/apache/ignite/internal/processors/database/BPlusTreeSelfTest.java
----------------------------------------------------------------------
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/database/BPlusTreeSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/database/BPlusTreeSelfTest.java
index 0358f5a..e5cda8f 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/database/BPlusTreeSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/database/BPlusTreeSelfTest.java
@@ -1132,10 +1132,10 @@ public class BPlusTreeSelfTest extends GridCommonAbstractTest {
 
     /**
      * @param page Page.
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      */
-    public static void checkPageId(Page page, long buf) {
-        long pageId = PageIO.getPageId(buf);
+    public static void checkPageId(Page page, long pageAddr) {
+        long pageId = PageIO.getPageId(pageAddr);
 
         // Page ID must be 0L for newly allocated page, for reused page effective ID must remain the same.
         if (pageId != 0L && page.id() != pageId)
@@ -1199,18 +1199,18 @@ public class BPlusTreeSelfTest extends GridCommonAbstractTest {
         }
 
         /** {@inheritDoc} */
-        @Override protected int compare(BPlusIO<Long> io, long buf, int idx, Long n2)
+        @Override protected int compare(BPlusIO<Long> io, long pageAddr, int idx, Long n2)
             throws IgniteCheckedException {
-            Long n1 = io.getLookupRow(this, buf, idx);
+            Long n1 = io.getLookupRow(this, pageAddr, idx);
 
             return Long.compare(n1, n2);
         }
 
         /** {@inheritDoc} */
-        @Override protected Long getRow(BPlusIO<Long> io, long buf, int idx) throws IgniteCheckedException {
+        @Override protected Long getRow(BPlusIO<Long> io, long pageAddr, int idx) throws IgniteCheckedException {
             assert io.canGetRow() : io;
 
-            return io.getLookupRow(this, buf, idx);
+            return io.getLookupRow(this, pageAddr, idx);
         }
 
         /**
@@ -1247,11 +1247,11 @@ public class BPlusTreeSelfTest extends GridCommonAbstractTest {
         }
 
         /** {@inheritDoc} */
-        @Override public void onReadLock(Page page, long buf) {
-            if (buf != 0L) {
-                long pageId = PageIO.getPageId(buf);
+        @Override public void onReadLock(Page page, long pageAddr) {
+            if (pageAddr != 0L) {
+                long pageId = PageIO.getPageId(pageAddr);
 
-                checkPageId(page, buf);
+                checkPageId(page, pageAddr);
 
                 assertNull(locks(true).put(page.id(), pageId));
             }
@@ -1260,10 +1260,10 @@ public class BPlusTreeSelfTest extends GridCommonAbstractTest {
         }
 
         /** {@inheritDoc} */
-        @Override public void onReadUnlock(Page page, long buf) {
-            checkPageId(page, buf);
+        @Override public void onReadUnlock(Page page, long pageAddr) {
+            checkPageId(page, pageAddr);
 
-            long pageId = PageIO.getPageId(buf);
+            long pageId = PageIO.getPageId(pageAddr);
 
             assertEquals(Long.valueOf(pageId), locks(true).remove(page.id()));
         }
@@ -1274,11 +1274,11 @@ public class BPlusTreeSelfTest extends GridCommonAbstractTest {
         }
 
         /** {@inheritDoc} */
-        @Override public void onWriteLock(Page page, long buf) {
-            if (buf != 0L) {
-                checkPageId(page, buf);
+        @Override public void onWriteLock(Page page, long pageAddr) {
+            if (pageAddr != 0L) {
+                checkPageId(page, pageAddr);
 
-                long pageId = PageIO.getPageId(buf);
+                long pageId = PageIO.getPageId(pageAddr);
 
                 if (pageId == 0L)
                     pageId = page.id(); // It is a newly allocated page.
@@ -1290,8 +1290,8 @@ public class BPlusTreeSelfTest extends GridCommonAbstractTest {
         }
 
         /** {@inheritDoc} */
-        @Override public void onWriteUnlock(Page page, long buf) {
-            assertEquals(effectivePageId(page.id()), effectivePageId(PageIO.getPageId(buf)));
+        @Override public void onWriteUnlock(Page page, long pageAddr) {
+            assertEquals(effectivePageId(page.id()), effectivePageId(PageIO.getPageId(pageAddr)));
 
             assertEquals(Long.valueOf(page.id()), locks(false).remove(page.id()));
         }
@@ -1382,16 +1382,16 @@ public class BPlusTreeSelfTest extends GridCommonAbstractTest {
         }
 
         /** {@inheritDoc} */
-        @Override public void storeByOffset(long buf, int off, Long row) {
+        @Override public void storeByOffset(long pageAddr, int off, Long row) {
             checkNotRemoved(row);
 
-            PageUtils.putLong(buf, off, row);
+            PageUtils.putLong(pageAddr, off, row);
         }
 
         /** {@inheritDoc} */
-        @Override public Long getLookupRow(BPlusTree<Long,?> tree, long buf, int idx)
+        @Override public Long getLookupRow(BPlusTree<Long,?> tree, long pageAddr, int idx)
             throws IgniteCheckedException {
-            Long row = PageUtils.getLong(buf, offset(idx));
+            Long row = PageUtils.getLong(pageAddr, offset(idx));
 
             checkNotRemoved(row);
 
@@ -1428,21 +1428,21 @@ public class BPlusTreeSelfTest extends GridCommonAbstractTest {
     private static final class LongLeafIO extends BPlusLeafIO<Long> {
         /**
          */
-        protected LongLeafIO() {
+        LongLeafIO() {
             super(LONG_LEAF_IO, 1, 8);
         }
 
         /** {@inheritDoc} */
-        @Override public int getMaxCount(long buf, int pageSize) {
+        @Override public int getMaxCount(long pageAddr, int pageSize) {
             if (MAX_PER_PAGE != 0)
                 return MAX_PER_PAGE;
 
-            return super.getMaxCount(buf, pageSize);
+            return super.getMaxCount(pageAddr, pageSize);
         }
 
         /** {@inheritDoc} */
-        @Override public void storeByOffset(long buf, int off, Long row) {
-            PageUtils.putLong(buf, off, row);
+        @Override public void storeByOffset(long pageAddr, int off, Long row) {
+            PageUtils.putLong(pageAddr, off, row);
         }
 
         /** {@inheritDoc} */
@@ -1453,9 +1453,9 @@ public class BPlusTreeSelfTest extends GridCommonAbstractTest {
         }
 
         /** {@inheritDoc} */
-        @Override public Long getLookupRow(BPlusTree<Long,?> tree, long buf, int idx)
+        @Override public Long getLookupRow(BPlusTree<Long,?> tree, long pageAddr, int idx)
             throws IgniteCheckedException {
-            return PageUtils.getLong(buf, offset(idx));
+            return PageUtils.getLong(pageAddr, offset(idx));
         }
     }
 }

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/H2Tree.java
----------------------------------------------------------------------
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/H2Tree.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/H2Tree.java
index 5f9d0fa..5c60b16 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/H2Tree.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/H2Tree.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.processors.query.h2.database;
 
-import java.nio.ByteBuffer;
 import java.util.concurrent.atomic.AtomicLong;
 import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.internal.pagemem.PageMemory;
@@ -76,9 +75,9 @@ public abstract class H2Tree extends BPlusTree<SearchRow, GridH2Row> {
     }
 
     /** {@inheritDoc} */
-    @Override protected GridH2Row getRow(BPlusIO<SearchRow> io, long buf, int idx)
+    @Override protected GridH2Row getRow(BPlusIO<SearchRow> io, long pageAddr, int idx)
         throws IgniteCheckedException {
-        return (GridH2Row)io.getLookupRow(this, buf, idx);
+        return (GridH2Row)io.getLookupRow(this, pageAddr, idx);
     }
 }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/H2TreeIndex.java
----------------------------------------------------------------------
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/H2TreeIndex.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/H2TreeIndex.java
index ac39850..bbd14da 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/H2TreeIndex.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/H2TreeIndex.java
@@ -87,9 +87,9 @@ public class H2TreeIndex extends GridH2IndexBase {
         tree = new H2Tree(name, cctx.offheap().reuseListForIndex(name), cctx.cacheId(),
             dbMgr.pageMemory(), cctx.shared().wal(), cctx.offheap().globalRemoveId(),
             tbl.rowFactory(), page.pageId().pageId(), page.isAllocated()) {
-            @Override protected int compare(BPlusIO<SearchRow> io, long buf, int idx, SearchRow row)
+            @Override protected int compare(BPlusIO<SearchRow> io, long pageAddr, int idx, SearchRow row)
                 throws IgniteCheckedException {
-                return compareRows(getRow(io, buf, idx), row);
+                return compareRows(getRow(io, pageAddr, idx), row);
             }
         };
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/io/H2InnerIO.java
----------------------------------------------------------------------
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/io/H2InnerIO.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/io/H2InnerIO.java
index e56691e..8252a69 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/io/H2InnerIO.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/io/H2InnerIO.java
@@ -44,31 +44,31 @@ public class H2InnerIO extends BPlusInnerIO<SearchRow> implements H2RowLinkIO {
     }
 
     /** {@inheritDoc} */
-    @Override public void storeByOffset(long buf, int off, SearchRow row) {
+    @Override public void storeByOffset(long pageAddr, int off, SearchRow row) {
         GridH2Row row0 = (GridH2Row)row;
 
         assert row0.link != 0;
 
-        PageUtils.putLong(buf, off, row0.link);
+        PageUtils.putLong(pageAddr, off, row0.link);
     }
 
     /** {@inheritDoc} */
-    @Override public SearchRow getLookupRow(BPlusTree<SearchRow,?> tree, long buf, int idx)
+    @Override public SearchRow getLookupRow(BPlusTree<SearchRow,?> tree, long pageAddr, int idx)
         throws IgniteCheckedException {
-        long link = getLink(buf, idx);
+        long link = getLink(pageAddr, idx);
 
         return ((H2Tree)tree).getRowFactory().getRow(link);
     }
 
     /** {@inheritDoc} */
-    @Override public void store(long dst, int dstIdx, BPlusIO<SearchRow> srcIo, long src, int srcIdx) {
-        long link = ((H2RowLinkIO)srcIo).getLink(src, srcIdx);
+    @Override public void store(long dstPageAddr, int dstIdx, BPlusIO<SearchRow> srcIo, long srcPageAddr, int srcIdx) {
+        long link = ((H2RowLinkIO)srcIo).getLink(srcPageAddr, srcIdx);
 
-        PageUtils.putLong(dst, offset(dstIdx), link);
+        PageUtils.putLong(dstPageAddr, offset(dstIdx), link);
     }
 
     /** {@inheritDoc} */
-    @Override public long getLink(long buf, int idx) {
-        return PageUtils.getLong(buf, offset(idx));
+    @Override public long getLink(long pageAddr, int idx) {
+        return PageUtils.getLong(pageAddr, offset(idx));
     }
 }

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/io/H2LeafIO.java
----------------------------------------------------------------------
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/io/H2LeafIO.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/io/H2LeafIO.java
index 67fe337..a24eb99 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/io/H2LeafIO.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/io/H2LeafIO.java
@@ -44,31 +44,31 @@ public class H2LeafIO extends BPlusLeafIO<SearchRow> implements H2RowLinkIO {
     }
 
     /** {@inheritDoc} */
-    @Override public void storeByOffset(long buf, int off, SearchRow row) {
+    @Override public void storeByOffset(long pageAddr, int off, SearchRow row) {
         GridH2Row row0 = (GridH2Row)row;
 
         assert row0.link != 0;
 
-        PageUtils.putLong(buf, off, row0.link);
+        PageUtils.putLong(pageAddr, off, row0.link);
     }
 
     /** {@inheritDoc} */
-    @Override public void store(long dst, int dstIdx, BPlusIO<SearchRow> srcIo, long src, int srcIdx) {
+    @Override public void store(long dstPageAddr, int dstIdx, BPlusIO<SearchRow> srcIo, long srcPageAddr, int srcIdx) {
         assert srcIo == this;
 
-        PageUtils.putLong(dst, offset(dstIdx), getLink(src, srcIdx));
+        PageUtils.putLong(dstPageAddr, offset(dstIdx), getLink(srcPageAddr, srcIdx));
     }
 
     /** {@inheritDoc} */
-    @Override public SearchRow getLookupRow(BPlusTree<SearchRow,?> tree, long buf, int idx)
+    @Override public SearchRow getLookupRow(BPlusTree<SearchRow,?> tree, long pageAddr, int idx)
         throws IgniteCheckedException {
-        long link = getLink(buf, idx);
+        long link = getLink(pageAddr, idx);
 
         return ((H2Tree)tree).getRowFactory().getRow(link);
     }
 
     /** {@inheritDoc} */
-    @Override public long getLink(long buf, int idx) {
-        return PageUtils.getLong(buf, offset(idx));
+    @Override public long getLink(long pageAddr, int idx) {
+        return PageUtils.getLong(pageAddr, offset(idx));
     }
 }

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/io/H2RowLinkIO.java
----------------------------------------------------------------------
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/io/H2RowLinkIO.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/io/H2RowLinkIO.java
index 852f46d..ce69197 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/io/H2RowLinkIO.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/io/H2RowLinkIO.java
@@ -22,9 +22,9 @@ package org.apache.ignite.internal.processors.query.h2.database.io;
  */
 public interface H2RowLinkIO {
     /**
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @param idx Index.
      * @return Row link.
      */
-    public long getLink(long buf, int idx);
+    public long getLink(long pageAddr, int idx);
 }


[2/2] ignite git commit: Minor.

Posted by sb...@apache.org.
Minor.


Project: http://git-wip-us.apache.org/repos/asf/ignite/repo
Commit: http://git-wip-us.apache.org/repos/asf/ignite/commit/1038a0b4
Tree: http://git-wip-us.apache.org/repos/asf/ignite/tree/1038a0b4
Diff: http://git-wip-us.apache.org/repos/asf/ignite/diff/1038a0b4

Branch: refs/heads/ignite-gg-11810
Commit: 1038a0b48f1243112b8e2a019cedbb1134dbf464
Parents: b81c30a
Author: sboikov <sb...@gridgain.com>
Authored: Wed Jan 11 17:32:14 2017 +0300
Committer: sboikov <sb...@gridgain.com>
Committed: Wed Jan 11 17:32:14 2017 +0300

----------------------------------------------------------------------
 .../ignite/internal/pagemem/PageMemory.java     |   2 +-
 .../internal/pagemem/impl/PageNoStoreImpl.java  |   3 -
 .../wal/record/delta/DataPageInsertRecord.java  |   1 -
 .../wal/record/delta/DataPageRemoveRecord.java  |   1 -
 .../delta/DataPageSetFreeListPageRecord.java    |   1 -
 .../wal/record/delta/FixCountRecord.java        |   1 -
 .../record/delta/FixLeftmostChildRecord.java    |   1 -
 .../pagemem/wal/record/delta/FixRemoveId.java   |   1 -
 .../wal/record/delta/InitNewPageRecord.java     |   3 +-
 .../wal/record/delta/InnerReplaceRecord.java    |   1 -
 .../delta/MetaPageUpdateLastAllocatedIndex.java |   1 -
 .../internal/processors/cache/CacheObject.java  |   5 +
 .../processors/cache/CacheObjectAdapter.java    |   7 +
 .../cache/IgniteCacheOffheapManagerImpl.java    | 156 +++++------
 .../processors/cache/IncompleteObject.java      |  13 -
 .../cache/database/DataStructure.java           |   9 +-
 .../cache/database/MetadataStorage.java         |  72 ++---
 .../database/freelist/io/PagesListMetaIO.java   |  66 ++---
 .../database/freelist/io/PagesListNodeIO.java   | 104 ++++----
 .../cache/database/tree/BPlusTree.java          | 263 ++++++++++---------
 .../cache/database/tree/io/BPlusLeafIO.java     |   1 -
 .../cache/database/tree/io/BPlusMetaIO.java     |   6 +-
 .../cache/database/tree/io/CacheVersionIO.java  |  57 ++--
 .../cache/database/tree/io/IOVersions.java      |  10 +-
 .../cache/database/tree/io/PageIO.java          |   8 +-
 .../cache/database/tree/util/PageHandler.java   |   7 +
 .../database/tree/util/PageLockListener.java    |  17 +-
 .../apache/ignite/internal/util/GridUnsafe.java |   2 +-
 .../IgniteIncompleteCacheObjectSelfTest.java    |   2 +-
 .../database/BPlusTreeReuseSelfTest.java        |  18 +-
 .../processors/database/BPlusTreeSelfTest.java  |  62 ++---
 .../processors/query/h2/database/H2Tree.java    |   5 +-
 .../query/h2/database/H2TreeIndex.java          |   4 +-
 .../query/h2/database/io/H2InnerIO.java         |  18 +-
 .../query/h2/database/io/H2LeafIO.java          |  16 +-
 .../query/h2/database/io/H2RowLinkIO.java       |   4 +-
 36 files changed, 471 insertions(+), 477 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/pagemem/PageMemory.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/PageMemory.java b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/PageMemory.java
index 1954376..cfee19f 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/PageMemory.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/PageMemory.java
@@ -26,7 +26,7 @@ import org.apache.ignite.lifecycle.LifecycleAware;
  */
 public interface PageMemory extends LifecycleAware, PageIdAllocator {
     /** */
-    public ByteOrder NATIVE_BYTE_ORDER = ByteOrder.nativeOrder();
+    public static final ByteOrder NATIVE_BYTE_ORDER = ByteOrder.nativeOrder();
 
     /**
      * Gets the page associated with the given page ID. Each page obtained with this method must be released by

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/pagemem/impl/PageNoStoreImpl.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/impl/PageNoStoreImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/impl/PageNoStoreImpl.java
index 5908434..3d6a553 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/impl/PageNoStoreImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/impl/PageNoStoreImpl.java
@@ -20,13 +20,10 @@ package org.apache.ignite.internal.pagemem.impl;
 import org.apache.ignite.internal.pagemem.FullPageId;
 import org.apache.ignite.internal.pagemem.Page;
 import org.apache.ignite.internal.pagemem.PageIdUtils;
-import org.apache.ignite.internal.pagemem.PageMemory;
 import org.apache.ignite.internal.processors.cache.database.tree.io.PageIO;
-import org.apache.ignite.internal.util.OffheapReadWriteLock;
 import org.apache.ignite.internal.util.typedef.internal.SB;
 
 import java.nio.ByteBuffer;
-import org.jetbrains.annotations.Nullable;
 
 /**
  *

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/DataPageInsertRecord.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/DataPageInsertRecord.java b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/DataPageInsertRecord.java
index 1ba22d2..95bf9d9 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/DataPageInsertRecord.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/DataPageInsertRecord.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.pagemem.wal.record.delta;
 
-import java.nio.ByteBuffer;
 import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.internal.processors.cache.database.tree.io.DataPageIO;
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/DataPageRemoveRecord.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/DataPageRemoveRecord.java b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/DataPageRemoveRecord.java
index 09f83b3..d0c9572 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/DataPageRemoveRecord.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/DataPageRemoveRecord.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.pagemem.wal.record.delta;
 
-import java.nio.ByteBuffer;
 import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.internal.processors.cache.database.tree.io.DataPageIO;
 import org.apache.ignite.internal.util.typedef.internal.S;

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/DataPageSetFreeListPageRecord.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/DataPageSetFreeListPageRecord.java b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/DataPageSetFreeListPageRecord.java
index 19878b8..b0bb90e 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/DataPageSetFreeListPageRecord.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/DataPageSetFreeListPageRecord.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.pagemem.wal.record.delta;
 
-import java.nio.ByteBuffer;
 import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.internal.processors.cache.database.tree.io.DataPageIO;
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/FixCountRecord.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/FixCountRecord.java b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/FixCountRecord.java
index 032f634..aa23099 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/FixCountRecord.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/FixCountRecord.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.pagemem.wal.record.delta;
 
-import java.nio.ByteBuffer;
 import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.internal.processors.cache.database.tree.io.BPlusIO;
 import org.apache.ignite.internal.processors.cache.database.tree.io.PageIO;

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/FixLeftmostChildRecord.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/FixLeftmostChildRecord.java b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/FixLeftmostChildRecord.java
index b345a43..81a8d01 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/FixLeftmostChildRecord.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/FixLeftmostChildRecord.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.pagemem.wal.record.delta;
 
-import java.nio.ByteBuffer;
 import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.internal.processors.cache.database.tree.io.BPlusInnerIO;
 import org.apache.ignite.internal.processors.cache.database.tree.io.PageIO;

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/FixRemoveId.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/FixRemoveId.java b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/FixRemoveId.java
index 0f8fe48..b2284e5 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/FixRemoveId.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/FixRemoveId.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.pagemem.wal.record.delta;
 
-import java.nio.ByteBuffer;
 import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.internal.processors.cache.database.tree.io.BPlusIO;
 import org.apache.ignite.internal.processors.cache.database.tree.io.PageIO;

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/InitNewPageRecord.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/InitNewPageRecord.java b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/InitNewPageRecord.java
index ceff1b0..d1fd660 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/InitNewPageRecord.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/InitNewPageRecord.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.pagemem.wal.record.delta;
 
-import java.nio.ByteBuffer;
 import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.internal.processors.cache.database.tree.io.PageIO;
 import org.apache.ignite.internal.util.tostring.GridToStringExclude;
@@ -25,7 +24,7 @@ import org.apache.ignite.internal.util.typedef.internal.S;
 import org.apache.ignite.internal.util.typedef.internal.U;
 
 /**
- * Initializes new page by calling {@link PageIO#initNewPage(ByteBuffer, long)}.
+ * Initializes new page by calling {@link PageIO#initNewPage(long, long, int)}.
  */
 public class InitNewPageRecord extends PageDeltaRecord {
     /** */

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/InnerReplaceRecord.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/InnerReplaceRecord.java b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/InnerReplaceRecord.java
index bad3fba..26e2499 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/InnerReplaceRecord.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/InnerReplaceRecord.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.pagemem.wal.record.delta;
 
-import java.nio.ByteBuffer;
 import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.IgniteException;
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/MetaPageUpdateLastAllocatedIndex.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/MetaPageUpdateLastAllocatedIndex.java b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/MetaPageUpdateLastAllocatedIndex.java
index c505009..fe2d55d 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/MetaPageUpdateLastAllocatedIndex.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/MetaPageUpdateLastAllocatedIndex.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.pagemem.wal.record.delta;
 
-import java.nio.ByteBuffer;
 import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.internal.processors.cache.database.tree.io.PageIO;
 import org.apache.ignite.internal.processors.cache.database.tree.io.PageMetaIO;

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheObject.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheObject.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheObject.java
index b5604cd..c226ba2 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheObject.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheObject.java
@@ -67,6 +67,11 @@ public interface CacheObject extends Message {
      */
     public boolean putValue(ByteBuffer buf) throws IgniteCheckedException;
 
+    /**
+     * @param addr Address tp write value to.
+     * @return Number of bytes written.
+     * @throws IgniteCheckedException If failed.
+     */
     public int putValue(long addr) throws IgniteCheckedException;
 
     /**

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheObjectAdapter.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheObjectAdapter.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheObjectAdapter.java
index 43cb016..8a73f75 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheObjectAdapter.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheObjectAdapter.java
@@ -84,6 +84,13 @@ public abstract class CacheObjectAdapter implements CacheObject, Externalizable
         return putValue(addr, cacheObjectType(), valBytes, 0);
     }
 
+    /**
+     * @param addr Write address.
+     * @param type Object type.
+     * @param valBytes Value bytes array.
+     * @param valOff Value bytes array offset.
+     * @return
+     */
     public static int putValue(long addr, byte type, byte[] valBytes, int valOff) {
         int off = 0;
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheOffheapManagerImpl.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheOffheapManagerImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheOffheapManagerImpl.java
index 549c545..44f3436 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheOffheapManagerImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheOffheapManagerImpl.java
@@ -1168,25 +1168,25 @@ public class IgniteCacheOffheapManagerImpl extends GridCacheManagerAdapter imple
         }
 
         /** {@inheritDoc} */
-        @Override protected int compare(BPlusIO<KeySearchRow> io, long buf, int idx, KeySearchRow row)
+        @Override protected int compare(BPlusIO<KeySearchRow> io, long pageAddr, int idx, KeySearchRow row)
             throws IgniteCheckedException {
-            int hash = ((RowLinkIO)io).getHash(buf, idx);
+            int hash = ((RowLinkIO)io).getHash(pageAddr, idx);
 
             int cmp = Integer.compare(hash, row.hash);
 
             if (cmp != 0)
                 return cmp;
 
-            long link = ((RowLinkIO)io).getLink(buf, idx);
+            long link = ((RowLinkIO)io).getLink(pageAddr, idx);
 
             return row.compareKey(cctx, link);
         }
 
         /** {@inheritDoc} */
-        @Override protected DataRow getRow(BPlusIO<KeySearchRow> io, long buf, int idx)
+        @Override protected DataRow getRow(BPlusIO<KeySearchRow> io, long pageAddr, int idx)
             throws IgniteCheckedException {
-            int hash = ((RowLinkIO)io).getHash(buf, idx);
-            long link = ((RowLinkIO)io).getLink(buf, idx);
+            int hash = ((RowLinkIO)io).getHash(pageAddr, idx);
+            long link = ((RowLinkIO)io).getLink(pageAddr, idx);
 
             return rowStore.dataRow(hash, link);
         }
@@ -1224,14 +1224,14 @@ public class IgniteCacheOffheapManagerImpl extends GridCacheManagerAdapter imple
     }
 
     /**
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @param off Offset.
      * @param link Link.
      * @param hash Hash.
      */
-    private static void store0(long buf, int off, long link, int hash) {
-        PageUtils.putLong(buf, off, link);
-        PageUtils.putInt(buf, off + 8, hash);
+    private static void store0(long pageAddr, int off, long link, int hash) {
+        PageUtils.putLong(pageAddr, off, link);
+        PageUtils.putInt(pageAddr, off + 8, hash);
     }
 
     /**
@@ -1239,18 +1239,18 @@ public class IgniteCacheOffheapManagerImpl extends GridCacheManagerAdapter imple
      */
     private interface RowLinkIO {
         /**
-         * @param buf Buffer.
+         * @param pageAddr Page address.
          * @param idx Index.
          * @return Row link.
          */
-        public long getLink(long buf, int idx);
+        public long getLink(long pageAddr, int idx);
 
         /**
-         * @param buf Buffer.
+         * @param pageAddr Page address.
          * @param idx Index.
          * @return Key hash code.
          */
-        public int getHash(long buf, int idx);
+        public int getHash(long pageAddr, int idx);
     }
 
     /**
@@ -1270,39 +1270,39 @@ public class IgniteCacheOffheapManagerImpl extends GridCacheManagerAdapter imple
         }
 
         /** {@inheritDoc} */
-        @Override public void storeByOffset(long buf, int off, KeySearchRow row) {
+        @Override public void storeByOffset(long pageAddr, int off, KeySearchRow row) {
             assert row.link() != 0;
 
-            store0(buf, off, row.link(), row.hash);
+            store0(pageAddr, off, row.link(), row.hash);
         }
 
         /** {@inheritDoc} */
-        @Override public KeySearchRow getLookupRow(BPlusTree<KeySearchRow, ?> tree, long buf, int idx) {
-            int hash = getHash(buf, idx);
-            long link = getLink(buf, idx);
+        @Override public KeySearchRow getLookupRow(BPlusTree<KeySearchRow, ?> tree, long pageAddr, int idx) {
+            int hash = getHash(pageAddr, idx);
+            long link = getLink(pageAddr, idx);
 
             return ((CacheDataTree)tree).rowStore.keySearchRow(hash, link);
         }
 
         /** {@inheritDoc} */
-        @Override public void store(long dst, int dstIdx, BPlusIO<KeySearchRow> srcIo, long src,
+        @Override public void store(long dstPageAddr, int dstIdx, BPlusIO<KeySearchRow> srcIo, long srcPageAddr,
             int srcIdx) {
-            int hash = ((RowLinkIO)srcIo).getHash(src, srcIdx);
-            long link = ((RowLinkIO)srcIo).getLink(src, srcIdx);
+            int hash = ((RowLinkIO)srcIo).getHash(srcPageAddr, srcIdx);
+            long link = ((RowLinkIO)srcIo).getLink(srcPageAddr, srcIdx);
 
-            store0(dst, offset(dstIdx), link, hash);
+            store0(dstPageAddr, offset(dstIdx), link, hash);
         }
 
         /** {@inheritDoc} */
-        @Override public long getLink(long buf, int idx) {
-            assert idx < getCount(buf) : idx;
+        @Override public long getLink(long pageAddr, int idx) {
+            assert idx < getCount(pageAddr) : idx;
 
-            return PageUtils.getLong(buf, offset(idx));
+            return PageUtils.getLong(pageAddr, offset(idx));
         }
 
         /** {@inheritDoc} */
-        @Override public int getHash(long buf, int idx) {
-            return PageUtils.getInt(buf, offset(idx) + 8);
+        @Override public int getHash(long pageAddr, int idx) {
+            return PageUtils.getInt(pageAddr, offset(idx) + 8);
         }
     }
 
@@ -1323,16 +1323,16 @@ public class IgniteCacheOffheapManagerImpl extends GridCacheManagerAdapter imple
         }
 
         /** {@inheritDoc} */
-        @Override public void storeByOffset(long buf, int off, KeySearchRow row) {
+        @Override public void storeByOffset(long pageAddr, int off, KeySearchRow row) {
             assert row.link() != 0;
 
-            store0(buf, off, row.link(), row.hash);
+            store0(pageAddr, off, row.link(), row.hash);
         }
 
         /** {@inheritDoc} */
-        @Override public void store(long dst, int dstIdx, BPlusIO<KeySearchRow> srcIo, long src,
+        @Override public void store(long dstPageAddr, int dstIdx, BPlusIO<KeySearchRow> srcIo, long srcPageAddr,
             int srcIdx) {
-            store0(dst, offset(dstIdx), getLink(src, srcIdx), getHash(src, srcIdx));
+            store0(dstPageAddr, offset(dstIdx), getLink(srcPageAddr, srcIdx), getHash(srcPageAddr, srcIdx));
         }
 
         /** {@inheritDoc} */
@@ -1344,15 +1344,15 @@ public class IgniteCacheOffheapManagerImpl extends GridCacheManagerAdapter imple
         }
 
         /** {@inheritDoc} */
-        @Override public long getLink(long buf, int idx) {
-            assert idx < getCount(buf) : idx;
+        @Override public long getLink(long pageAddr, int idx) {
+            assert idx < getCount(pageAddr) : idx;
 
-            return PageUtils.getLong(buf, offset(idx));
+            return PageUtils.getLong(pageAddr, offset(idx));
         }
 
         /** {@inheritDoc} */
-        @Override public int getHash(long buf, int idx) {
-            return PageUtils.getInt(buf, offset(idx) + 8);
+        @Override public int getHash(long pageAddr, int idx) {
+            return PageUtils.getInt(pageAddr, offset(idx) + 8);
         }
     }
 
@@ -1447,9 +1447,9 @@ public class IgniteCacheOffheapManagerImpl extends GridCacheManagerAdapter imple
         }
 
         /** {@inheritDoc} */
-        @Override protected int compare(BPlusIO<PendingRow> io, long buf, int idx, PendingRow row)
+        @Override protected int compare(BPlusIO<PendingRow> io, long pageAddr, int idx, PendingRow row)
             throws IgniteCheckedException {
-            long expireTime = ((PendingRowIO)io).getExpireTime(buf, idx);
+            long expireTime = ((PendingRowIO)io).getExpireTime(pageAddr, idx);
 
             int cmp = Long.compare(expireTime, row.expireTime);
 
@@ -1459,15 +1459,15 @@ public class IgniteCacheOffheapManagerImpl extends GridCacheManagerAdapter imple
             if (row.link == 0L)
                 return 0;
 
-            long link = ((PendingRowIO)io).getLink(buf, idx);
+            long link = ((PendingRowIO)io).getLink(pageAddr, idx);
 
             return Long.compare(link, row.link);
         }
 
         /** {@inheritDoc} */
-        @Override protected PendingRow getRow(BPlusIO<PendingRow> io, long buf, int idx)
+        @Override protected PendingRow getRow(BPlusIO<PendingRow> io, long pageAddr, int idx)
             throws IgniteCheckedException {
-            return io.getLookupRow(this, buf, idx);
+            return io.getLookupRow(this, pageAddr, idx);
         }
     }
 
@@ -1476,18 +1476,18 @@ public class IgniteCacheOffheapManagerImpl extends GridCacheManagerAdapter imple
      */
     private interface PendingRowIO {
         /**
-         * @param buf Buffer.
+         * @param pageAddr Page address.
          * @param idx Index.
          * @return Expire time.
          */
-        long getExpireTime(long buf, int idx);
+        long getExpireTime(long pageAddr, int idx);
 
         /**
-         * @param buf Buffer.
+         * @param pageAddr Page address.
          * @param idx Index.
          * @return Link.
          */
-        long getLink(long buf, int idx);
+        long getLink(long pageAddr, int idx);
     }
 
     /**
@@ -1507,43 +1507,45 @@ public class IgniteCacheOffheapManagerImpl extends GridCacheManagerAdapter imple
         }
 
         /** {@inheritDoc} */
-        @Override public void storeByOffset(long buf, int off, PendingRow row) throws IgniteCheckedException {
+        @Override public void storeByOffset(long pageAddr, int off, PendingRow row) throws IgniteCheckedException {
             assert row.link != 0;
             assert row.expireTime != 0;
 
-            PageUtils.putLong(buf, off, row.expireTime);
-            PageUtils.putLong(buf, off + 8, row.link);
+            PageUtils.putLong(pageAddr, off, row.expireTime);
+            PageUtils.putLong(pageAddr, off + 8, row.link);
         }
 
         /** {@inheritDoc} */
-        @Override public void store(long dst,
+        @Override public void store(long dstPageAddr,
             int dstIdx,
             BPlusIO<PendingRow> srcIo,
-            long src,
+            long srcPageAddr,
             int srcIdx) throws IgniteCheckedException {
             int dstOff = offset(dstIdx);
 
-            long link = ((PendingRowIO)srcIo).getLink(src, srcIdx);
-            long expireTime = ((PendingRowIO)srcIo).getExpireTime(src, srcIdx);
+            long link = ((PendingRowIO)srcIo).getLink(srcPageAddr, srcIdx);
+            long expireTime = ((PendingRowIO)srcIo).getExpireTime(srcPageAddr, srcIdx);
 
-            PageUtils.putLong(dst, dstOff, expireTime);
-            PageUtils.putLong(dst, dstOff + 8, link);
+            PageUtils.putLong(dstPageAddr, dstOff, expireTime);
+            PageUtils.putLong(dstPageAddr, dstOff + 8, link);
         }
 
         /** {@inheritDoc} */
-        @Override public PendingRow getLookupRow(BPlusTree<PendingRow, ?> tree, long buf, int idx)
+        @Override public PendingRow getLookupRow(BPlusTree<PendingRow, ?> tree, long pageAddr, int idx)
             throws IgniteCheckedException {
-            return PendingRow.createRowWithKey(((PendingEntriesTree)tree).cctx, getExpireTime(buf, idx), getLink(buf, idx));
+            return PendingRow.createRowWithKey(((PendingEntriesTree)tree).cctx,
+                getExpireTime(pageAddr, idx),
+                getLink(pageAddr, idx));
         }
 
         /** {@inheritDoc} */
-        @Override public long getExpireTime(long buf, int idx) {
-            return PageUtils.getLong(buf, offset(idx));
+        @Override public long getExpireTime(long pageAddr, int idx) {
+            return PageUtils.getLong(pageAddr, offset(idx));
         }
 
         /** {@inheritDoc} */
-        @Override public long getLink(long buf, int idx) {
-            return PageUtils.getLong(buf, offset(idx) + 8);
+        @Override public long getLink(long pageAddr, int idx) {
+            return PageUtils.getLong(pageAddr, offset(idx) + 8);
         }
     }
 
@@ -1564,43 +1566,45 @@ public class IgniteCacheOffheapManagerImpl extends GridCacheManagerAdapter imple
         }
 
         /** {@inheritDoc} */
-        @Override public void storeByOffset(long buf, int off, PendingRow row) throws IgniteCheckedException {
+        @Override public void storeByOffset(long pageAddr, int off, PendingRow row) throws IgniteCheckedException {
             assert row.link != 0;
             assert row.expireTime != 0;
 
-            PageUtils.putLong(buf, off, row.expireTime);
-            PageUtils.putLong(buf, off + 8, row.link);
+            PageUtils.putLong(pageAddr, off, row.expireTime);
+            PageUtils.putLong(pageAddr, off + 8, row.link);
         }
 
         /** {@inheritDoc} */
-        @Override public void store(long dst,
+        @Override public void store(long dstPageAddr,
             int dstIdx,
             BPlusIO<PendingRow> srcIo,
-            long src,
+            long srcPageAddr,
             int srcIdx) throws IgniteCheckedException {
             int dstOff = offset(dstIdx);
 
-            long link = ((PendingRowIO)srcIo).getLink(src, srcIdx);
-            long expireTime = ((PendingRowIO)srcIo).getExpireTime(src, srcIdx);
+            long link = ((PendingRowIO)srcIo).getLink(srcPageAddr, srcIdx);
+            long expireTime = ((PendingRowIO)srcIo).getExpireTime(srcPageAddr, srcIdx);
 
-            PageUtils.putLong(dst, dstOff, expireTime);
-            PageUtils.putLong(dst, dstOff + 8, link);
+            PageUtils.putLong(dstPageAddr, dstOff, expireTime);
+            PageUtils.putLong(dstPageAddr, dstOff + 8, link);
         }
 
         /** {@inheritDoc} */
-        @Override public PendingRow getLookupRow(BPlusTree<PendingRow, ?> tree, long buf, int idx)
+        @Override public PendingRow getLookupRow(BPlusTree<PendingRow, ?> tree, long pageAddr, int idx)
             throws IgniteCheckedException {
-            return PendingRow.createRowWithKey(((PendingEntriesTree)tree).cctx, getExpireTime(buf, idx), getLink(buf, idx));
+            return PendingRow.createRowWithKey(((PendingEntriesTree)tree).cctx,
+                getExpireTime(pageAddr, idx),
+                getLink(pageAddr, idx));
         }
 
         /** {@inheritDoc} */
-        @Override public long getExpireTime(long buf, int idx) {
-            return PageUtils.getLong(buf, offset(idx));
+        @Override public long getExpireTime(long pageAddr, int idx) {
+            return PageUtils.getLong(pageAddr, offset(idx));
         }
 
         /** {@inheritDoc} */
-        @Override public long getLink(long buf, int idx) {
-            return PageUtils.getLong(buf, offset(idx) + 8);
+        @Override public long getLink(long pageAddr, int idx) {
+            return PageUtils.getLong(pageAddr, offset(idx) + 8);
         }
     }
 }

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IncompleteObject.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IncompleteObject.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IncompleteObject.java
index ce0e306..666fc27 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IncompleteObject.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IncompleteObject.java
@@ -18,7 +18,6 @@
 package org.apache.ignite.internal.processors.cache;
 
 import java.nio.ByteBuffer;
-import org.apache.ignite.internal.pagemem.PageUtils;
 
 /**
  * Incomplete object.
@@ -87,16 +86,4 @@ public class IncompleteObject<T> {
 
         off += len;
     }
-
-    public int readData(long buf, int remaining) {
-        assert data != null;
-
-        final int len = Math.min(data.length - off, remaining);
-
-        PageUtils.getBytes(buf, 0, data, off, len);
-
-        off += len;
-
-        return len;
-    }
 }

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/DataStructure.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/DataStructure.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/DataStructure.java
index 7997e6f..f47a697 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/DataStructure.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/DataStructure.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.processors.cache.database;
 
-import java.nio.ByteBuffer;
 import java.util.Random;
 import java.util.concurrent.ThreadLocalRandom;
 import org.apache.ignite.IgniteCheckedException;
@@ -184,12 +183,12 @@ public abstract class DataStructure implements PageLockListener {
     }
 
     /** {@inheritDoc} */
-    @Override public void onWriteLock(Page page, long buf) {
+    @Override public void onWriteLock(Page page, long pageAddr) {
         // No-op.
     }
 
     /** {@inheritDoc} */
-    @Override public void onWriteUnlock(Page page, long buf) {
+    @Override public void onWriteUnlock(Page page, long pageAddr) {
         // No-op.
     }
 
@@ -199,12 +198,12 @@ public abstract class DataStructure implements PageLockListener {
     }
 
     /** {@inheritDoc} */
-    @Override public void onReadLock(Page page, long buf) {
+    @Override public void onReadLock(Page page, long pageAddr) {
         // No-op.
     }
 
     /** {@inheritDoc} */
-    @Override public void onReadUnlock(Page page, long buf) {
+    @Override public void onReadUnlock(Page page, long pageAddr) {
         // No-op.
     }
 }

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/MetadataStorage.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/MetadataStorage.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/MetadataStorage.java
index d1d5ba9..6d7b60c 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/MetadataStorage.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/MetadataStorage.java
@@ -191,19 +191,19 @@ public class MetadataStorage implements MetaStore {
         }
 
         /** {@inheritDoc} */
-        @Override protected int compare(final BPlusIO<IndexItem> io, final long buf, final int idx,
+        @Override protected int compare(final BPlusIO<IndexItem> io, final long pageAddr, final int idx,
             final IndexItem row) throws IgniteCheckedException {
             final int off = ((IndexIO)io).getOffset(idx);
 
             int shift = 0;
 
             // Compare index names.
-            final byte len = PageUtils.getByte(buf, off + shift);
+            final byte len = PageUtils.getByte(pageAddr, off + shift);
 
             shift += BYTE_LEN;
 
             for (int i = 0; i < len && i < row.idxName.length; i++) {
-                final int cmp = Byte.compare(PageUtils.getByte(buf, off + i + shift), row.idxName[i]);
+                final int cmp = Byte.compare(PageUtils.getByte(pageAddr, off + i + shift), row.idxName[i]);
 
                 if (cmp != 0)
                     return cmp;
@@ -213,9 +213,9 @@ public class MetadataStorage implements MetaStore {
         }
 
         /** {@inheritDoc} */
-        @Override protected IndexItem getRow(final BPlusIO<IndexItem> io, final long buf,
+        @Override protected IndexItem getRow(final BPlusIO<IndexItem> io, final long pageAddr,
             final int idx) throws IgniteCheckedException {
-            return readRow(buf, ((IndexIO)io).getOffset(idx));
+            return readRow(pageAddr, ((IndexIO)io).getOffset(idx));
         }
     }
 
@@ -247,74 +247,74 @@ public class MetadataStorage implements MetaStore {
     /**
      * Store row to buffer.
      *
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @param off Offset in buf.
      * @param row Row to store.
      */
     private static void storeRow(
-        final long buf,
+        final long pageAddr,
         int off,
         final IndexItem row
     ) {
         // Index name length.
-        PageUtils.putByte(buf, off, (byte)row.idxName.length);
+        PageUtils.putByte(pageAddr, off, (byte)row.idxName.length);
         off++;
 
         // Index name.
-        PageUtils.putBytes(buf, off, row.idxName);
+        PageUtils.putBytes(pageAddr, off, row.idxName);
         off += row.idxName.length;
 
         // Page ID.
-        PageUtils.putLong(buf, off, row.pageId);
+        PageUtils.putLong(pageAddr, off, row.pageId);
     }
 
     /**
      * Copy row data.
      *
-     * @param dst Destination buffer.
+     * @param dstPageAddr Destination page address.
      * @param dstOff Destination buf offset.
-     * @param src Source buffer.
+     * @param srcPageAddr Source page address.
      * @param srcOff Src buf offset.
      */
     private static void storeRow(
-        final long dst,
+        final long dstPageAddr,
         int dstOff,
-        final long src,
+        final long srcPageAddr,
         int srcOff
     ) {
         // Index name length.
-        final byte len = PageUtils.getByte(src, srcOff);
+        final byte len = PageUtils.getByte(srcPageAddr, srcOff);
         srcOff++;
 
-        PageUtils.putByte(dst, dstOff, len);
+        PageUtils.putByte(dstPageAddr, dstOff, len);
         dstOff++;
 
-        PageHandler.copyMemory(src, srcOff, dst, dstOff, len);
+        PageHandler.copyMemory(srcPageAddr, srcOff, dstPageAddr, dstOff, len);
         srcOff += len;
         dstOff += len;
 
         // Page ID.
-        PageUtils.putLong(dst, dstOff, PageUtils.getLong(src, srcOff));
+        PageUtils.putLong(dstPageAddr, dstOff, PageUtils.getLong(srcPageAddr, srcOff));
     }
 
     /**
      * Read row from buffer.
      *
-     * @param buf Buffer to read.
-     * @param off Offset in buf.
+     * @param pageAddr Page address.
+     * @param off Offset.
      * @return Read row.
      */
-    private static IndexItem readRow(final long buf, int off) {
+    private static IndexItem readRow(final long pageAddr, int off) {
         // Index name length.
-        final int len = PageUtils.getByte(buf, off) & 0xFF;
+        final int len = PageUtils.getByte(pageAddr, off) & 0xFF;
         off++;
 
         // Index name.
-        final byte[] idxName = PageUtils.getBytes(buf, off, len);
+        final byte[] idxName = PageUtils.getBytes(pageAddr, off, len);
         off += len;
 
         // Page ID.
-        final long pageId = PageUtils.getLong(buf, off);
+        final long pageId = PageUtils.getLong(pageAddr, off);
 
         return new IndexItem(idxName, pageId);
     }
@@ -348,21 +348,21 @@ public class MetadataStorage implements MetaStore {
         }
 
         /** {@inheritDoc} */
-        @Override public void storeByOffset(long buf, int off, IndexItem row) throws IgniteCheckedException {
-            storeRow(buf, off, row);
+        @Override public void storeByOffset(long pageAddr, int off, IndexItem row) throws IgniteCheckedException {
+            storeRow(pageAddr, off, row);
         }
 
         /** {@inheritDoc} */
-        @Override public void store(final long dst, final int dstIdx, final BPlusIO<IndexItem> srcIo,
-            final long src,
+        @Override public void store(final long dstPageAddr, final int dstIdx, final BPlusIO<IndexItem> srcIo,
+            final long srcPageAddr,
             final int srcIdx) throws IgniteCheckedException {
-            storeRow(dst, offset(dstIdx), src, ((IndexIO)srcIo).getOffset(srcIdx));
+            storeRow(dstPageAddr, offset(dstIdx), srcPageAddr, ((IndexIO)srcIo).getOffset(srcIdx));
         }
 
         /** {@inheritDoc} */
-        @Override public IndexItem getLookupRow(final BPlusTree<IndexItem, ?> tree, final long buf,
+        @Override public IndexItem getLookupRow(final BPlusTree<IndexItem, ?> tree, final long pageAddr,
             final int idx) throws IgniteCheckedException {
-            return readRow(buf, offset(idx));
+            return readRow(pageAddr, offset(idx));
         }
 
         /** {@inheritDoc} */
@@ -394,19 +394,19 @@ public class MetadataStorage implements MetaStore {
         }
 
         /** {@inheritDoc} */
-        @Override public void store(final long dst,
+        @Override public void store(final long dstPageAddr,
             final int dstIdx,
             final BPlusIO<IndexItem> srcIo,
-            final long src,
+            final long srcPageAddr,
             final int srcIdx) throws IgniteCheckedException {
-            storeRow(dst, offset(dstIdx), src, ((IndexIO)srcIo).getOffset(srcIdx));
+            storeRow(dstPageAddr, offset(dstIdx), srcPageAddr, ((IndexIO)srcIo).getOffset(srcIdx));
         }
 
         /** {@inheritDoc} */
         @Override public IndexItem getLookupRow(final BPlusTree<IndexItem, ?> tree,
-            final long buf,
+            final long pageAddr,
             final int idx) throws IgniteCheckedException {
-            return readRow(buf, offset(idx));
+            return readRow(pageAddr, offset(idx));
         }
 
         /** {@inheritDoc} */

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/freelist/io/PagesListMetaIO.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/freelist/io/PagesListMetaIO.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/freelist/io/PagesListMetaIO.java
index 67e2667..6bd50a3 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/freelist/io/PagesListMetaIO.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/freelist/io/PagesListMetaIO.java
@@ -53,67 +53,67 @@ public class PagesListMetaIO extends PageIO {
     }
 
     /** {@inheritDoc} */
-    @Override public void initNewPage(long buf, long pageId, int pageSize) {
-        super.initNewPage(buf, pageId, pageSize);
+    @Override public void initNewPage(long pageAddr, long pageId, int pageSize) {
+        super.initNewPage(pageAddr, pageId, pageSize);
 
-        setCount(buf, 0);
-        setNextMetaPageId(buf, 0L);
+        setCount(pageAddr, 0);
+        setNextMetaPageId(pageAddr, 0L);
     }
 
     /**
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @return Stored items count.
      */
-    private int getCount(long buf) {
-        return PageUtils.getShort(buf, CNT_OFF);
+    private int getCount(long pageAddr) {
+        return PageUtils.getShort(pageAddr, CNT_OFF);
     }
 
     /**
-     * @param buf Buffer,
+     * @param pageAddr Page address.
      * @param cnt Stored items count.
      */
-    private void setCount(long buf, int cnt) {
+    private void setCount(long pageAddr, int cnt) {
         assert cnt >= 0 && cnt <= Short.MAX_VALUE : cnt;
 
-        PageUtils.putShort(buf, CNT_OFF, (short)cnt);
+        PageUtils.putShort(pageAddr, CNT_OFF, (short)cnt);
     }
 
     /**
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @return Next meta page ID.
      */
-    public long getNextMetaPageId(long buf) {
-        return PageUtils.getLong(buf, NEXT_META_PAGE_OFF);
+    public long getNextMetaPageId(long pageAddr) {
+        return PageUtils.getLong(pageAddr, NEXT_META_PAGE_OFF);
     }
 
     /**
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @param metaPageId Next meta page ID.
      */
-    public void setNextMetaPageId(long buf, long metaPageId) {
-        PageUtils.putLong(buf, NEXT_META_PAGE_OFF, metaPageId);
+    public void setNextMetaPageId(long pageAddr, long metaPageId) {
+        PageUtils.putLong(pageAddr, NEXT_META_PAGE_OFF, metaPageId);
     }
 
     /**
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      */
-    public void resetCount(long buf) {
-        setCount(buf, 0);
+    public void resetCount(long pageAddr) {
+        setCount(pageAddr, 0);
     }
 
     /**
      * @param pageSize Page size.
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @param bucket Bucket number.
      * @param tails Tails.
      * @param tailsOff Tails offset.
      * @return Number of items written.
      */
-    public int addTails(int pageSize, long buf, int bucket, PagesList.Stripe[] tails, int tailsOff) {
+    public int addTails(int pageSize, long pageAddr, int bucket, PagesList.Stripe[] tails, int tailsOff) {
         assert bucket >= 0 && bucket <= Short.MAX_VALUE : bucket;
 
-        int cnt = getCount(buf);
-        int cap = getCapacity(pageSize, buf);
+        int cnt = getCount(pageAddr);
+        int cap = getCapacity(pageSize, pageAddr);
 
         if (cnt == cap)
             return 0;
@@ -123,25 +123,25 @@ public class PagesListMetaIO extends PageIO {
         int write = Math.min(cap - cnt, tails.length - tailsOff);
 
         for (int i = 0; i < write; i++) {
-            PageUtils.putShort(buf, off, (short)bucket);
-            PageUtils.putLong(buf, off + 2, tails[tailsOff].tailId);
+            PageUtils.putShort(pageAddr, off, (short)bucket);
+            PageUtils.putLong(pageAddr, off + 2, tails[tailsOff].tailId);
 
             tailsOff++;
 
             off += ITEM_SIZE;
         }
 
-        setCount(buf, cnt + write);
+        setCount(pageAddr, cnt + write);
 
         return write;
     }
 
     /**
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @param res Results map.
      */
-    public void getBucketsData(long buf, Map<Integer, GridLongList> res) {
-        int cnt = getCount(buf);
+    public void getBucketsData(long pageAddr, Map<Integer, GridLongList> res) {
+        int cnt = getCount(pageAddr);
 
         assert cnt >= 0 && cnt <= Short.MAX_VALUE : cnt;
 
@@ -151,10 +151,10 @@ public class PagesListMetaIO extends PageIO {
         int off = offset(0);
 
         for (int i = 0; i < cnt; i++) {
-            Integer bucket = (int)PageUtils.getShort(buf, off);
+            Integer bucket = (int)PageUtils.getShort(pageAddr, off);
             assert bucket >= 0 && bucket <= Short.MAX_VALUE : bucket;
 
-            long tailId = PageUtils.getLong(buf, off + 2);
+            long tailId = PageUtils.getLong(pageAddr, off + 2);
             assert tailId != 0;
 
             GridLongList list = res.get(bucket);
@@ -169,10 +169,10 @@ public class PagesListMetaIO extends PageIO {
     }
 
     /**
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @return Maximum number of items which can be stored in buffer.
      */
-    private int getCapacity(int pageSize, long buf) {
+    private int getCapacity(int pageSize, long pageAddr) {
         return (pageSize - ITEMS_OFF) / ITEM_SIZE;
     }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/freelist/io/PagesListNodeIO.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/freelist/io/PagesListNodeIO.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/freelist/io/PagesListNodeIO.java
index ad48bc1..6bd0532 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/freelist/io/PagesListNodeIO.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/freelist/io/PagesListNodeIO.java
@@ -52,74 +52,74 @@ public class PagesListNodeIO extends PageIO {
     }
 
     /** {@inheritDoc} */
-    @Override public void initNewPage(long buf, long pageId, int pageSize) {
-        super.initNewPage(buf, pageId, pageSize);
+    @Override public void initNewPage(long pageAddr, long pageId, int pageSize) {
+        super.initNewPage(pageAddr, pageId, pageSize);
 
-        setEmpty(buf);
+        setEmpty(pageAddr);
 
-        setPreviousId(buf, 0L);
-        setNextId(buf, 0L);
+        setPreviousId(pageAddr, 0L);
+        setNextId(pageAddr, 0L);
     }
 
     /**
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      */
-    private void setEmpty(long buf) {
-        setCount(buf, 0);
+    private void setEmpty(long pageAddr) {
+        setCount(pageAddr, 0);
     }
 
     /**
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @return Next page ID.
      */
-    public long getNextId(long buf) {
-        return PageUtils.getLong(buf, NEXT_PAGE_ID_OFF);
+    public long getNextId(long pageAddr) {
+        return PageUtils.getLong(pageAddr, NEXT_PAGE_ID_OFF);
     }
 
     /**
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @param nextId Next page ID.
      */
-    public void setNextId(long buf, long nextId) {
-        PageUtils.putLong(buf, NEXT_PAGE_ID_OFF, nextId);
+    public void setNextId(long pageAddr, long nextId) {
+        PageUtils.putLong(pageAddr, NEXT_PAGE_ID_OFF, nextId);
     }
 
     /**
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @return Previous page ID.
      */
-    public long getPreviousId(long buf) {
-        return PageUtils.getLong(buf, PREV_PAGE_ID_OFF);
+    public long getPreviousId(long pageAddr) {
+        return PageUtils.getLong(pageAddr, PREV_PAGE_ID_OFF);
     }
 
     /**
-     * @param buf Page buffer.
+     * @param pageAddr Page address.
      * @param prevId Previous  page ID.
      */
-    public void setPreviousId(long buf, long prevId) {
-        PageUtils.putLong(buf, PREV_PAGE_ID_OFF, prevId);
+    public void setPreviousId(long pageAddr, long prevId) {
+        PageUtils.putLong(pageAddr, PREV_PAGE_ID_OFF, prevId);
     }
 
     /**
      * Gets total count of entries in this page. Does not change the buffer state.
      *
-     * @param buf Page buffer to get count from.
+     * @param pageAddr Page address to get count from.
      * @return Total number of entries.
      */
-    public int getCount(long buf) {
-        return PageUtils.getShort(buf, CNT_OFF);
+    public int getCount(long pageAddr) {
+        return PageUtils.getShort(pageAddr, CNT_OFF);
     }
 
     /**
      * Sets total count of entries in this page. Does not change the buffer state.
      *
-     * @param buf Page buffer to write to.
+     * @param pageAddr Page address to write to.
      * @param cnt Count.
      */
-    private void setCount(long buf, int cnt) {
+    private void setCount(long pageAddr, int cnt) {
         assert cnt >= 0 && cnt <= Short.MAX_VALUE : cnt;
 
-        PageUtils.putShort(buf, CNT_OFF, (short)cnt);
+        PageUtils.putShort(pageAddr, CNT_OFF, (short)cnt);
     }
 
     /**
@@ -141,39 +141,39 @@ public class PagesListNodeIO extends PageIO {
     }
 
     /**
-     * @param buf Page buffer.
+     * @param pageAddr Page address.
      * @param idx Item index.
      * @return Item at the given index.
      */
-    private long getAt(long buf, int idx) {
-        return PageUtils.getLong(buf, offset(idx));
+    private long getAt(long pageAddr, int idx) {
+        return PageUtils.getLong(pageAddr, offset(idx));
     }
 
     /**
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @param idx Item index.
      * @param pageId Item value to write.
      */
-    private void setAt(long buf, int idx, long pageId) {
-        PageUtils.putLong(buf, offset(idx), pageId);
+    private void setAt(long pageAddr, int idx, long pageId) {
+        PageUtils.putLong(pageAddr, offset(idx), pageId);
     }
 
     /**
      * Adds page to the end of pages list.
      *
-     * @param buf Page buffer.
+     * @param pageAddr Page address.
      * @param pageId Page ID.
      * @param pageSize Page size.
      * @return Total number of items in this page.
      */
-    public int addPage(long buf, long pageId, int pageSize) {
-        int cnt = getCount(buf);
+    public int addPage(long pageAddr, long pageId, int pageSize) {
+        int cnt = getCount(pageAddr);
 
         if (cnt == getCapacity(pageSize))
             return -1;
 
-        setAt(buf, cnt, pageId);
-        setCount(buf, cnt + 1);
+        setAt(pageAddr, cnt, pageId);
+        setCount(pageAddr, cnt + 1);
 
         return cnt;
     }
@@ -181,38 +181,38 @@ public class PagesListNodeIO extends PageIO {
     /**
      * Removes any page from the pages list.
      *
-     * @param buf Page buffer.
+     * @param pageAddr Page address.
      * @return Removed page ID.
      */
-    public long takeAnyPage(long buf) {
-        int cnt = getCount(buf);
+    public long takeAnyPage(long pageAddr) {
+        int cnt = getCount(pageAddr);
 
         if (cnt == 0)
             return 0L;
 
-        setCount(buf, --cnt);
+        setCount(pageAddr, --cnt);
 
-        return getAt(buf, cnt);
+        return getAt(pageAddr, cnt);
     }
 
     /**
      * Removes the given page ID from the pages list.
      *
-     * @param buf Page buffer.
+     * @param pageAddr Page address.
      * @param dataPageId Page ID to remove.
      * @return {@code true} if page was in the list and was removed, {@code false} otherwise.
      */
-    public boolean removePage(long buf, long dataPageId) {
+    public boolean removePage(long pageAddr, long dataPageId) {
         assert dataPageId != 0;
 
-        int cnt = getCount(buf);
+        int cnt = getCount(pageAddr);
 
         for (int i = 0; i < cnt; i++) {
-            if (getAt(buf, i) == dataPageId) {
+            if (getAt(pageAddr, i) == dataPageId) {
                 if (i != cnt - 1)
-                    copyMemory(buf, buf, offset(i + 1), offset(i), 8 * (cnt - i - 1));
+                    copyMemory(pageAddr, pageAddr, offset(i + 1), offset(i), 8 * (cnt - i - 1));
 
-                setCount(buf, cnt - 1);
+                setCount(pageAddr, cnt - 1);
 
                 return true;
             }
@@ -222,10 +222,10 @@ public class PagesListNodeIO extends PageIO {
     }
 
     /**
-     * @param buf Page buffer.
-     * @return {@code true} if there are no items in this page.
+     * @param pageAddr Page address.
+     * @return {@code True} if there are no items in this page.
      */
-    public boolean isEmpty(long buf) {
-        return getCount(buf) == 0;
+    public boolean isEmpty(long pageAddr) {
+        return getCount(pageAddr) == 0;
     }
 }

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/BPlusTree.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/BPlusTree.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/BPlusTree.java
index c136799..e2b261c 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/BPlusTree.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/BPlusTree.java
@@ -1043,18 +1043,18 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
         long leftmostChildId;
 
         try (Page page = page(pageId)) {
-            long buf = readLock(page); // No correctness guaranties.
+            long pageAddr = readLock(page); // No correctness guaranties.
 
             try {
-                BPlusIO<L> io = io(buf);
+                BPlusIO<L> io = io(pageAddr);
 
                 if (io.isLeaf())
                     fail("Leaf.");
 
-                leftmostChildId = inner(io).getLeft(buf, 0);
+                leftmostChildId = inner(io).getLeft(pageAddr, 0);
             }
             finally {
-                readUnlock(page, buf);
+                readUnlock(page, pageAddr);
             }
         }
 
@@ -1135,34 +1135,34 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
 
     /**
      * @param io IO.
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @param keys Keys.
      * @return String.
      * @throws IgniteCheckedException If failed.
      */
-    private String printPage(BPlusIO<L> io, long buf, boolean keys) throws IgniteCheckedException {
+    private String printPage(BPlusIO<L> io, long pageAddr, boolean keys) throws IgniteCheckedException {
         StringBuilder b = new StringBuilder();
 
-        b.append(formatPageId(PageIO.getPageId(buf)));
+        b.append(formatPageId(PageIO.getPageId(pageAddr)));
 
         b.append(" [ ");
         b.append(io.isLeaf() ? "L " : "I ");
 
-        int cnt = io.getCount(buf);
-        long fwdId = io.getForward(buf);
+        int cnt = io.getCount(pageAddr);
+        long fwdId = io.getForward(pageAddr);
 
         b.append("cnt=").append(cnt).append(' ');
         b.append("fwd=").append(formatPageId(fwdId)).append(' ');
 
         if (!io.isLeaf()) {
-            b.append("lm=").append(formatPageId(inner(io).getLeft(buf, 0))).append(' ');
+            b.append("lm=").append(formatPageId(inner(io).getLeft(pageAddr, 0))).append(' ');
 
             if (cnt > 0)
-                b.append("rm=").append(formatPageId(inner(io).getRight(buf, cnt - 1))).append(' ');
+                b.append("rm=").append(formatPageId(inner(io).getRight(pageAddr, cnt - 1))).append(' ');
         }
 
         if (keys)
-            b.append("keys=").append(printPageKeys(io, buf)).append(' ');
+            b.append("keys=").append(printPageKeys(io, pageAddr)).append(' ');
 
         b.append(']');
 
@@ -1171,12 +1171,12 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
 
     /**
      * @param io IO.
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @return Keys as String.
      * @throws IgniteCheckedException If failed.
      */
-    private String printPageKeys(BPlusIO<L> io, long buf) throws IgniteCheckedException {
-        int cnt = io.getCount(buf);
+    private String printPageKeys(BPlusIO<L> io, long pageAddr) throws IgniteCheckedException {
+        int cnt = io.getCount(pageAddr);
 
         StringBuilder b = new StringBuilder();
 
@@ -1186,7 +1186,7 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
             if (i != 0)
                 b.append(',');
 
-            b.append(io.isLeaf() || canGetRowFromInner ? getRow(io, buf, i) : io.getLookupRow(this, buf, i));
+            b.append(io.isLeaf() || canGetRowFromInner ? getRow(io, pageAddr, i) : io.getLookupRow(this, pageAddr, i));
         }
 
         b.append(']');
@@ -1655,39 +1655,38 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
     /**
      * @return {@code True} if state was changed.
      */
-    protected final boolean markDestroyed() {
+    private final boolean markDestroyed() {
         return destroyed.compareAndSet(false, true);
     }
 
     /**
-     * @param metaBuf Meta page buffer.
+     * @param pageAddr Meta page address.
      * @return First page IDs.
      */
-    protected Iterable<Long> getFirstPageIds(long metaBuf) {
-        List<Long> result = new ArrayList<>();
+    protected Iterable<Long> getFirstPageIds(long pageAddr) {
+        List<Long> res = new ArrayList<>();
 
-        BPlusMetaIO mio = BPlusMetaIO.VERSIONS.forPage(metaBuf);
+        BPlusMetaIO mio = BPlusMetaIO.VERSIONS.forPage(pageAddr);
 
-        for (int lvl = mio.getRootLevel(metaBuf); lvl >= 0; lvl--) {
-            result.add(mio.getFirstPageId(metaBuf, lvl));
-        }
+        for (int lvl = mio.getRootLevel(pageAddr); lvl >= 0; lvl--)
+            res.add(mio.getFirstPageId(pageAddr, lvl));
 
-        return result;
+        return res;
     }
 
     /**
      * @param pageId Page ID.
      * @param page Page.
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @return Recycled page ID.
      * @throws IgniteCheckedException If failed.
      */
-    private long recyclePage(long pageId, Page page, long buf) throws IgniteCheckedException {
+    private long recyclePage(long pageId, Page page, long pageAddr) throws IgniteCheckedException {
         // Rotate page ID to avoid concurrency issues with reused pages.
         pageId = PageIdUtils.rotatePageId(pageId);
 
         // Update page ID inside of the buffer, Page.id() will always return the original page ID.
-        PageIO.setPageId(buf, pageId);
+        PageIO.setPageId(pageAddr, pageId);
 
         if (needWalDeltaRecord(page))
             wal.log(new RecycleRecord(cacheId, page.id(), pageId));
@@ -1743,11 +1742,11 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
 
     /**
      * @param page Page.
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      */
-    private void writeUnlockAndClose(Page page, long buf) {
+    private void writeUnlockAndClose(Page page, long pageAddr) {
         try {
-            writeUnlock(page, buf, true);
+            writeUnlock(page, pageAddr, true);
         }
         finally {
             page.close();
@@ -1861,25 +1860,25 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
 
     /**
      * @param io IO.
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @param back Backward page.
      * @return Page ID.
      */
-    private long doAskNeighbor(BPlusIO<L> io, long buf, boolean back) {
+    private long doAskNeighbor(BPlusIO<L> io, long pageAddr, boolean back) {
         long res;
 
         if (back) {
             // Count can be 0 here if it is a routing page, in this case we have a single child.
-            int cnt = io.getCount(buf);
+            int cnt = io.getCount(pageAddr);
 
             // We need to do get the rightmost child: io.getRight(cnt - 1),
             // here io.getLeft(cnt) is the same, but handles negative index if count is 0.
-            res = inner(io).getLeft(buf, cnt);
+            res = inner(io).getLeft(pageAddr, cnt);
         }
         else // Leftmost child.
-            res = inner(io).getLeft(buf, 0);
+            res = inner(io).getLeft(pageAddr, 0);
 
-        assert res != 0 : "inner page with no route down: " + U.hexLong(PageIO.getPageId(buf));
+        assert res != 0 : "inner page with no route down: " + U.hexLong(PageIO.getPageId(pageAddr));
 
         return res;
     }
@@ -1974,13 +1973,13 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
 
         /**
          * @param io IO.
-         * @param buf Buffer.
+         * @param pageAddr Page address.
          * @param idx Index of found entry.
          * @param lvl Level.
          * @return {@code true} If we need to stop.
          * @throws IgniteCheckedException If failed.
          */
-        boolean found(BPlusIO<L> io, long buf, int idx, int lvl) throws IgniteCheckedException {
+        boolean found(BPlusIO<L> io, long pageAddr, int idx, int lvl) throws IgniteCheckedException {
             assert lvl >= 0;
 
             return lvl == 0; // Stop if we are at the bottom.
@@ -1988,13 +1987,13 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
 
         /**
          * @param io IO.
-         * @param buf Buffer.
+         * @param pageAddr Page address.
          * @param idx Insertion point.
          * @param lvl Level.
          * @return {@code true} If we need to stop.
          * @throws IgniteCheckedException If failed.
          */
-        boolean notFound(BPlusIO<L> io, long buf, int idx, int lvl) throws IgniteCheckedException {
+        boolean notFound(BPlusIO<L> io, long pageAddr, int idx, int lvl) throws IgniteCheckedException {
             assert lvl >= 0;
 
             return lvl == 0; // Stop if we are at the bottom.
@@ -2032,12 +2031,12 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
         }
 
         /** {@inheritDoc} */
-        @Override boolean found(BPlusIO<L> io, long buf, int idx, int lvl) throws IgniteCheckedException {
+        @Override boolean found(BPlusIO<L> io, long pageAddr, int idx, int lvl) throws IgniteCheckedException {
             // Check if we are on an inner page and can't get row from it.
             if (lvl != 0 && !canGetRowFromInner)
                 return false;
 
-            row = getRow(io, buf, idx);
+            row = getRow(io, pageAddr, idx);
 
             return true;
         }
@@ -2065,16 +2064,16 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
         }
 
         /** {@inheritDoc} */
-        @Override boolean found(BPlusIO<L> io, long buf, int idx, int lvl) throws IgniteCheckedException {
+        @Override boolean found(BPlusIO<L> io, long pageAddr, int idx, int lvl) throws IgniteCheckedException {
             throw new IllegalStateException(); // Must never be called because we always have a shift.
         }
 
         /** {@inheritDoc} */
-        @Override boolean notFound(BPlusIO<L> io, long buf, int idx, int lvl) throws IgniteCheckedException {
+        @Override boolean notFound(BPlusIO<L> io, long pageAddr, int idx, int lvl) throws IgniteCheckedException {
             if (lvl != 0)
                 return false;
 
-            cursor.init(buf, io, idx);
+            cursor.init(pageAddr, io, idx);
 
             return true;
         }
@@ -2098,7 +2097,7 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
         private Page tail;
 
         /** */
-        private long tailBuf;
+        private long tailPageAddr;
 
         /**
          * Bottom level for insertion (insert can't go deeper). Will be incremented on split on each level.
@@ -2122,7 +2121,7 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
         }
 
         /** {@inheritDoc} */
-        @Override boolean found(BPlusIO<L> io, long buf, int idx, int lvl) {
+        @Override boolean found(BPlusIO<L> io, long pageAddr, int idx, int lvl) {
             if (lvl == 0) // Leaf: need to stop.
                 return true;
 
@@ -2136,7 +2135,7 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
         }
 
         /** {@inheritDoc} */
-        @Override boolean notFound(BPlusIO<L> io, long buf, int idx, int lvl) {
+        @Override boolean notFound(BPlusIO<L> io, long pageAddr, int idx, int lvl) {
             assert btmLvl >= 0 : btmLvl;
             assert lvl >= btmLvl : lvl;
 
@@ -2145,16 +2144,16 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
 
         /**
          * @param tail Tail page.
-         * @param tailBuf Tail buffer.
+         * @param tailPageAddr Tail page address.
          */
-        private void tail(Page tail, long tailBuf) {
-            assert (tail == null) == (tailBuf == 0L);
+        private void tail(Page tail, long tailPageAddr) {
+            assert (tail == null) == (tailPageAddr == 0L);
 
             if (this.tail != null)
-                writeUnlockAndClose(this.tail, this.tailBuf);
+                writeUnlockAndClose(this.tail, this.tailPageAddr);
 
             this.tail = tail;
-            this.tailBuf = tailBuf;
+            this.tailPageAddr = tailPageAddr;
         }
 
         /** {@inheritDoc} */
@@ -2182,21 +2181,21 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
         /**
          * @param page Page.
          * @param io IO.
-         * @param buf Buffer.
+         * @param pageAddr Page address.
          * @param idx Index.
          * @param lvl Level.
          * @return Move up row.
          * @throws IgniteCheckedException If failed.
          */
-        private L insert(Page page, BPlusIO<L> io, long buf, int idx, int lvl)
+        private L insert(Page page, BPlusIO<L> io, long pageAddr, int idx, int lvl)
             throws IgniteCheckedException {
-            int maxCnt = io.getMaxCount(buf, pageSize());
-            int cnt = io.getCount(buf);
+            int maxCnt = io.getMaxCount(pageAddr, pageSize());
+            int cnt = io.getCount(pageAddr);
 
             if (cnt == maxCnt) // Need to split page.
-                return insertWithSplit(page, io, buf, idx, lvl);
+                return insertWithSplit(page, io, pageAddr, idx, lvl);
 
-            insertSimple(page, io, buf, idx);
+            insertSimple(page, io, pageAddr, idx);
 
             return null;
         }
@@ -2204,13 +2203,13 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
         /**
          * @param page Page.
          * @param io IO.
-         * @param buf Buffer.
+         * @param pageAddr Page address.
          * @param idx Index.
          * @throws IgniteCheckedException If failed.
          */
-        private void insertSimple(Page page, BPlusIO<L> io, long buf, int idx)
+        private void insertSimple(Page page, BPlusIO<L> io, long pageAddr, int idx)
             throws IgniteCheckedException {
-            io.insert(buf, idx, row, null, rightId);
+            io.insert(pageAddr, idx, row, null, rightId);
 
             if (needWalDeltaRecord(page))
                 wal.log(new InsertRecord<>(cacheId, page.id(), io, idx, row, null, rightId));
@@ -2219,19 +2218,19 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
         /**
          * @param page Page.
          * @param io IO.
-         * @param buf Buffer.
+         * @param pageAddr Page address.
          * @param idx Index.
          * @param lvl Level.
          * @return Move up row.
          * @throws IgniteCheckedException If failed.
          */
-        private L insertWithSplit(Page page, BPlusIO<L> io, final long buf, int idx, int lvl)
+        private L insertWithSplit(Page page, BPlusIO<L> io, final long pageAddr, int idx, int lvl)
             throws IgniteCheckedException {
             long fwdId = allocatePage(bag);
 
             try (Page fwd = page(fwdId)) {
                 // Need to check this before the actual split, because after the split we will have new forward page here.
-                boolean hadFwd = io.getForward(buf) != 0;
+                boolean hadFwd = io.getForward(pageAddr) != 0;
 
                 long fwdPageAddr = writeLock(fwd); // Initial write, no need to check for concurrent modification.
 
@@ -2241,13 +2240,13 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
                     // Never write full forward page, because it is known to be new.
                     fwd.fullPageWalRecordPolicy(Boolean.FALSE);
 
-                    boolean midShift = splitPage(io, page, buf, fwdId, fwd, fwdPageAddr, idx);
+                    boolean midShift = splitPage(io, page, pageAddr, fwdId, fwd, fwdPageAddr, idx);
 
                     // Do insert.
-                    int cnt = io.getCount(buf);
+                    int cnt = io.getCount(pageAddr);
 
                     if (idx < cnt || (idx == cnt && !midShift)) { // Insert into back page.
-                        insertSimple(page, io, buf, idx);
+                        insertSimple(page, io, pageAddr, idx);
 
                         // Fix leftmost child of forward page, because newly inserted row will go up.
                         if (idx == cnt && !io.isLeaf()) {
@@ -2261,13 +2260,13 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
                         insertSimple(fwd, io, fwdPageAddr, idx - cnt);
 
                     // Do move up.
-                    cnt = io.getCount(buf);
+                    cnt = io.getCount(pageAddr);
 
                     // Last item from backward row goes up.
-                    L moveUpRow = io.getLookupRow(BPlusTree.this, buf, cnt - 1);
+                    L moveUpRow = io.getLookupRow(BPlusTree.this, pageAddr, cnt - 1);
 
                     if (!io.isLeaf()) { // Leaf pages must contain all the links, inner pages remove moveUpLink.
-                        io.setCount(buf, cnt - 1);
+                        io.setCount(pageAddr, cnt - 1);
 
                         if (needWalDeltaRecord(page)) // Rare case, we can afford separate WAL record to avoid complexity.
                             wal.log(new FixCountRecord(cacheId, page.id(), cnt - 1));
@@ -2288,7 +2287,7 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
                                 // Never write full new root page, because it is known to be new.
                                 newRoot.fullPageWalRecordPolicy(Boolean.FALSE);
 
-                                long pageId = PageIO.getPageId(buf);
+                                long pageId = PageIO.getPageId(pageAddr);
 
                                 inner(io).initNewRoot(newRootPageAddr,
                                     newRootId,
@@ -2416,7 +2415,7 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
         }
 
         /** {@inheritDoc} */
-        @Override boolean notFound(BPlusIO<L> io, long buf, int idx, int lvl) {
+        @Override boolean notFound(BPlusIO<L> io, long pageAddr, int idx, int lvl) {
             if (lvl == 0) {
                 assert tail == null;
 
@@ -2778,21 +2777,21 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
         /**
          * @param page Page.
          * @param io IO.
-         * @param buf Buffer.
+         * @param pageAddr Page address.
          * @param cnt Count.
          * @param idx Index to remove.
          * @throws IgniteCheckedException If failed.
          */
-        private void removeDataRowFromLeaf(Page page, BPlusIO<L> io, long buf, int cnt, int idx)
+        private void removeDataRowFromLeaf(Page page, BPlusIO<L> io, long pageAddr, int cnt, int idx)
             throws IgniteCheckedException {
             assert idx >= 0 && idx < cnt: idx;
             assert io.isLeaf(): "inner";
             assert !isRemoved(): "already removed";
 
             // Detach the row.
-            removed = getRow(io, buf, idx);
+            removed = getRow(io, pageAddr, idx);
 
-            doRemove(page, io, buf, cnt, idx);
+            doRemove(page, io, pageAddr, cnt, idx);
 
             assert isRemoved();
         }
@@ -2800,17 +2799,17 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
         /**
          * @param page Page.
          * @param io IO.
-         * @param buf Buffer.
+         * @param pageAddr Page address.
          * @param cnt Count.
          * @param idx Index to remove.
          * @throws IgniteCheckedException If failed.
          */
-        private void doRemove(Page page, BPlusIO<L> io, long buf, int cnt, int idx)
+        private void doRemove(Page page, BPlusIO<L> io, long pageAddr, int cnt, int idx)
             throws IgniteCheckedException {
             assert cnt > 0 : cnt;
             assert idx >= 0 && idx < cnt : idx + " " + cnt;
 
-            io.remove(buf, idx, cnt);
+            io.remove(pageAddr, idx, cnt);
 
             if (needWalDeltaRecord(page))
                 wal.log(new RemoveRecord(cacheId, page.id(), idx, cnt));
@@ -2973,23 +2972,23 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
 
         /**
          * @param page Page.
-         * @param buf Buffer.
+         * @param pageAddr Page address.
          * @param release Release write lock and release page.
          * @throws IgniteCheckedException If failed.
          */
-        private void freePage(Page page, long buf, boolean release)
+        private void freePage(Page page, long pageAddr, boolean release)
             throws IgniteCheckedException {
             long pageId = page.id();
 
             long effectivePageId = PageIdUtils.effectivePageId(pageId);
 
-            pageId = recyclePage(pageId, page, buf);
+            pageId = recyclePage(pageId, page, pageAddr);
 
             if (effectivePageId != PageIdUtils.effectivePageId(pageId))
                 throw new IllegalStateException("Effective page ID must stay the same.");
 
             if (release)
-                writeUnlockAndClose(page, buf);
+                writeUnlockAndClose(page, pageAddr);
 
             bag().addFreePage(pageId);
         }
@@ -3170,14 +3169,14 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
 
         /**
          * @param page Page.
-         * @param buf Buffer.
+         * @param pageAddr Page address.
          * @param io IO.
          * @param lvl Level.
          * @param type Type.
          * @return Added tail.
          */
-        private Tail<L> addTail(Page page, long buf, BPlusIO<L> io, int lvl, byte type) {
-            final Tail<L> t = new Tail<>(page, buf, io, type, lvl);
+        private Tail<L> addTail(Page page, long pageAddr, BPlusIO<L> io, int lvl, byte type) {
+            final Tail<L> t = new Tail<>(page, pageAddr, io, type, lvl);
 
             if (tail == null)
                 tail = t;
@@ -3391,14 +3390,14 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
     }
 
     /**
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @return IO.
      */
-    private BPlusIO<L> io(long buf) {
-        assert buf != 0;
+    private BPlusIO<L> io(long pageAddr) {
+        assert pageAddr != 0;
 
-        int type = PageIO.getType(buf);
-        int ver = PageIO.getVersion(buf);
+        int type = PageIO.getType(pageAddr);
+        int ver = PageIO.getVersion(pageAddr);
 
         if (innerIos.getType() == type)
             return innerIos.forVersion(ver);
@@ -3406,7 +3405,7 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
         if (leafIos.getType() == type)
             return leafIos.forVersion(ver);
 
-        throw new IllegalStateException("Unknown page type: " + type + " pageId: " + U.hexLong(PageIO.getPageId(buf)));
+        throw new IllegalStateException("Unknown page type: " + type + " pageId: " + U.hexLong(PageIO.getPageId(pageAddr)));
     }
 
     /**
@@ -3434,24 +3433,24 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
     }
 
     /**
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @param idx Index of row in the given buffer.
      * @param row Lookup row.
      * @return Comparison result as in {@link Comparator#compare(Object, Object)}.
      * @throws IgniteCheckedException If failed.
      */
-    protected abstract int compare(BPlusIO<L> io, long buf, int idx, L row) throws IgniteCheckedException;
+    protected abstract int compare(BPlusIO<L> io, long pageAddr, int idx, L row) throws IgniteCheckedException;
 
     /**
      * Get the full detached row. Can be called on inner page only if {@link #canGetRowFromInner} is {@code true}.
      *
      * @param io IO.
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @param idx Index.
      * @return Full detached data row.
      * @throws IgniteCheckedException If failed.
      */
-    protected abstract T getRow(BPlusIO<L> io, long buf, int idx) throws IgniteCheckedException;
+    protected abstract T getRow(BPlusIO<L> io, long pageAddr, int idx) throws IgniteCheckedException;
 
     /**
      * Forward cursor.
@@ -3486,24 +3485,24 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
         }
 
         /**
-         * @param buf Buffer.
+         * @param pageAddr Page address.
          * @param io IO.
          * @param startIdx Start index.
          * @throws IgniteCheckedException If failed.
          */
-        private void init(long buf, BPlusIO<L> io, int startIdx) throws IgniteCheckedException {
+        private void init(long pageAddr, BPlusIO<L> io, int startIdx) throws IgniteCheckedException {
             nextPageId = 0;
             row = -1;
 
-            int cnt = io.getCount(buf);
+            int cnt = io.getCount(pageAddr);
 
             // If we see an empty page here, it means that it is an empty tree.
             if (cnt == 0) {
-                assert io.getForward(buf) == 0L;
+                assert io.getForward(pageAddr) == 0L;
 
                 rows = null;
             }
-            else if (!fillFromBuffer(buf, io, startIdx, cnt)) {
+            else if (!fillFromBuffer(pageAddr, io, startIdx, cnt)) {
                 if (rows != EMPTY) {
                     assert rows.length > 0; // Otherwise it makes no sense to create an array.
 
@@ -3514,18 +3513,18 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
         }
 
         /**
-         * @param buf Buffer.
+         * @param pageAddr Page address.
          * @param io IO.
          * @param cnt Count.
          * @return Adjusted to lower bound start index.
          * @throws IgniteCheckedException If failed.
          */
-        private int findLowerBound(long buf, BPlusIO<L> io, int cnt) throws IgniteCheckedException {
+        private int findLowerBound(long pageAddr, BPlusIO<L> io, int cnt) throws IgniteCheckedException {
             // Compare with the first row on the page.
-            int cmp = compare(io, buf, 0, lowerBound);
+            int cmp = compare(io, pageAddr, 0, lowerBound);
 
             if (cmp < 0 || (cmp == 0 && lowerShift == 1)) {
-                int idx = findInsertionPoint(io, buf, 0, cnt, lowerBound, lowerShift);
+                int idx = findInsertionPoint(io, pageAddr, 0, cnt, lowerBound, lowerShift);
 
                 assert idx < 0;
 
@@ -3536,19 +3535,19 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
         }
 
         /**
-         * @param buf Buffer.
+         * @param pageAddr Page address.
          * @param io IO.
          * @param low Start index.
          * @param cnt Number of rows in the buffer.
          * @return Corrected number of rows with respect to upper bound.
          * @throws IgniteCheckedException If failed.
          */
-        private int findUpperBound(long buf, BPlusIO<L> io, int low, int cnt) throws IgniteCheckedException {
+        private int findUpperBound(long pageAddr, BPlusIO<L> io, int low, int cnt) throws IgniteCheckedException {
             // Compare with the last row on the page.
-            int cmp = compare(io, buf, cnt - 1, upperBound);
+            int cmp = compare(io, pageAddr, cnt - 1, upperBound);
 
             if (cmp > 0) {
-                int idx = findInsertionPoint(io, buf, low, cnt, upperBound, 1);
+                int idx = findInsertionPoint(io, pageAddr, low, cnt, upperBound, 1);
 
                 assert idx < 0;
 
@@ -3561,7 +3560,7 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
         }
 
         /**
-         * @param buf Buffer.
+         * @param pageAddr Page address.
          * @param io IO.
          * @param startIdx Start index.
          * @param cnt Number of rows in the buffer.
@@ -3569,7 +3568,7 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
          * @throws IgniteCheckedException If failed.
          */
         @SuppressWarnings("unchecked")
-        private boolean fillFromBuffer(long buf, BPlusIO<L> io, int startIdx, int cnt)
+        private boolean fillFromBuffer(long pageAddr, BPlusIO<L> io, int startIdx, int cnt)
             throws IgniteCheckedException {
             assert io.isLeaf() : io;
             assert cnt != 0 : cnt; // We can not see empty pages (empty tree handled in init).
@@ -3578,13 +3577,13 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
 
             checkDestroyed();
 
-            nextPageId = io.getForward(buf);
+            nextPageId = io.getForward(pageAddr);
 
             if (lowerBound != null && startIdx == 0)
-                startIdx = findLowerBound(buf, io, cnt);
+                startIdx = findLowerBound(pageAddr, io, cnt);
 
             if (upperBound != null && cnt != startIdx)
-                cnt = findUpperBound(buf, io, startIdx, cnt);
+                cnt = findUpperBound(pageAddr, io, startIdx, cnt);
 
             cnt -= startIdx;
 
@@ -3595,7 +3594,7 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
                 rows = (T[])new Object[cnt];
 
             for (int i = 0; i < cnt; i++) {
-                T r = getRow(io, buf, startIdx + i);
+                T r = getRow(io, pageAddr, startIdx + i);
 
                 rows = GridArrays.set(rows, i, r);
             }
@@ -3788,13 +3787,39 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure {
      * Operation result.
      */
     enum Result {
-        GO_DOWN, GO_DOWN_X, FOUND, NOT_FOUND, RETRY, RETRY_ROOT
+        /** */
+        GO_DOWN,
+
+        /** */
+        GO_DOWN_X,
+
+        /** */
+        FOUND,
+
+        /** */
+        NOT_FOUND,
+
+        /** */
+        RETRY,
+
+        /** */
+        RETRY_ROOT
     }
 
     /**
      * Four state boolean.
      */
     enum Bool {
-        FALSE, TRUE, READY, DONE
+        /** */
+        FALSE,
+
+        /** */
+        TRUE,
+
+        /** */
+        READY,
+
+        /** */
+        DONE
     }
 }

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/BPlusLeafIO.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/BPlusLeafIO.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/BPlusLeafIO.java
index 8b3a4f3..f3dccee 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/BPlusLeafIO.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/BPlusLeafIO.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.processors.cache.database.tree.io;
 
-import java.nio.ByteBuffer;
 import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.internal.processors.cache.database.tree.util.PageHandler;
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/1038a0b4/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/BPlusMetaIO.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/BPlusMetaIO.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/BPlusMetaIO.java
index b5f655f..5925547 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/BPlusMetaIO.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/database/tree/io/BPlusMetaIO.java
@@ -112,11 +112,11 @@ public class BPlusMetaIO extends PageIO {
     }
 
     /**
-     * @param buf Buffer.
+     * @param pageAddr Page address.
      * @return Root level.
      */
-    public int getRootLevel(long buf) {
-        int lvls = getLevelsCount(buf); // The highest level page is root.
+    public int getRootLevel(long pageAddr) {
+        int lvls = getLevelsCount(pageAddr); // The highest level page is root.
 
         assert lvls > 0 : lvls;