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Posted to commits@cassandra.apache.org by yu...@apache.org on 2014/11/26 02:49:33 UTC
[1/6] cassandra git commit: Backport CASSANDRA-7386
Repository: cassandra
Updated Branches:
refs/heads/cassandra-2.0 41469ecf6 -> 8b5cf6404
refs/heads/cassandra-2.1 e0dff2b80 -> 3faff8b15
refs/heads/trunk 7eea53e5d -> 999ce832d
Backport CASSANDRA-7386
Project: http://git-wip-us.apache.org/repos/asf/cassandra/repo
Commit: http://git-wip-us.apache.org/repos/asf/cassandra/commit/8b5cf640
Tree: http://git-wip-us.apache.org/repos/asf/cassandra/tree/8b5cf640
Diff: http://git-wip-us.apache.org/repos/asf/cassandra/diff/8b5cf640
Branch: refs/heads/cassandra-2.0
Commit: 8b5cf64043e2d002fdb91921319110911e332042
Parents: 41469ec
Author: Robert Stupp <sn...@snazy.de>
Authored: Tue Nov 25 19:45:34 2014 -0600
Committer: Yuki Morishita <yu...@apache.org>
Committed: Tue Nov 25 19:46:38 2014 -0600
----------------------------------------------------------------------
CHANGES.txt | 1 +
.../apache/cassandra/db/ColumnFamilyStore.java | 5 -
.../org/apache/cassandra/db/Directories.java | 160 +++++++++++++------
src/java/org/apache/cassandra/db/Memtable.java | 14 +-
.../db/compaction/CompactionManager.java | 3 +-
.../cassandra/db/compaction/CompactionTask.java | 67 ++++----
.../cassandra/db/compaction/Scrubber.java | 5 +-
.../cassandra/io/util/DiskAwareRunnable.java | 10 +-
.../cassandra/service/StorageService.java | 20 ---
.../cassandra/streaming/StreamReader.java | 2 +-
.../cassandra/streaming/StreamReceiveTask.java | 8 +-
.../org/apache/cassandra/db/CommitLogTest.java | 4 +-
.../apache/cassandra/db/DirectoriesTest.java | 130 +++++++++++++++
13 files changed, 286 insertions(+), 143 deletions(-)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/CHANGES.txt
----------------------------------------------------------------------
diff --git a/CHANGES.txt b/CHANGES.txt
index 7519653..937edbb 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -25,6 +25,7 @@
CQLSSTableWriter (CASSANDRA-7463)
* Fix totalDiskSpaceUsed calculation (CASSANDRA-8205)
* Add DC-aware sequential repair (CASSANDRA-8193)
+ * Improve JBOD disk utilization (CASSANDRA-7386)
2.0.11:
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/db/ColumnFamilyStore.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/db/ColumnFamilyStore.java b/src/java/org/apache/cassandra/db/ColumnFamilyStore.java
index 8a18347..6365b4f 100644
--- a/src/java/org/apache/cassandra/db/ColumnFamilyStore.java
+++ b/src/java/org/apache/cassandra/db/ColumnFamilyStore.java
@@ -1879,11 +1879,6 @@ public class ColumnFamilyStore implements ColumnFamilyStoreMBean
Directories.clearSnapshot(snapshotName, snapshotDirs);
}
- public boolean hasUnreclaimedSpace()
- {
- return getLiveDiskSpaceUsed() < getTotalDiskSpaceUsed();
- }
-
public long getTotalDiskSpaceUsed()
{
return metric.totalDiskSpaceUsed.count();
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/db/Directories.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/db/Directories.java b/src/java/org/apache/cassandra/db/Directories.java
index e118f86..69c7a06 100644
--- a/src/java/org/apache/cassandra/db/Directories.java
+++ b/src/java/org/apache/cassandra/db/Directories.java
@@ -22,8 +22,7 @@ import java.io.FileFilter;
import java.io.IOError;
import java.io.IOException;
import java.util.*;
-import java.util.concurrent.TimeUnit;
-import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.ThreadLocalRandom;
import java.util.concurrent.atomic.AtomicLong;
import com.google.common.collect.ImmutableMap;
@@ -200,73 +199,113 @@ public class Directories
*/
public File getLocationForDisk(DataDirectory dataDirectory)
{
+ if (dataDirectory != null)
+ for (File dir : sstableDirectories)
+ if (dir.getAbsolutePath().startsWith(dataDirectory.location.getAbsolutePath()))
+ return dir;
+ return null;
+ }
+
+ public Descriptor find(String filename)
+ {
for (File dir : sstableDirectories)
{
- if (dir.getAbsolutePath().startsWith(dataDirectory.location.getAbsolutePath()))
- return dir;
+ if (new File(dir, filename).exists())
+ return Descriptor.fromFilename(dir, filename).left;
}
return null;
}
+ /**
+ * Basically the same as calling {@link #getWriteableLocationAsFile(long)} with an unknown size ({@code -1L}),
+ * which may return any non-blacklisted directory - even a data directory that has no usable space.
+ * Do not use this method in production code.
+ *
+ * @throws IOError if all directories are blacklisted.
+ */
public File getDirectoryForNewSSTables()
{
- File path = getWriteableLocationAsFile();
-
- // Requesting GC has a chance to free space only if we're using mmap and a non SUN jvm
- if (path == null
- && (DatabaseDescriptor.getDiskAccessMode() == Config.DiskAccessMode.mmap || DatabaseDescriptor.getIndexAccessMode() == Config.DiskAccessMode.mmap)
- && !FileUtils.isCleanerAvailable())
- {
- logger.info("Forcing GC to free up disk space. Upgrade to the Oracle JVM to avoid this");
- StorageService.instance.requestGC();
- // retry after GCing has forced unmap of compacted SSTables so they can be deleted
- // Note: GCInspector will do this already, but only sun JVM supports GCInspector so far
- SSTableDeletingTask.rescheduleFailedTasks();
- Uninterruptibles.sleepUninterruptibly(10, TimeUnit.SECONDS);
- path = getWriteableLocationAsFile();
- }
-
- return path;
+ return getWriteableLocationAsFile(-1L);
}
- public File getWriteableLocationAsFile()
+ /**
+ * Returns a non-blacklisted data directory that _currently_ has {@code writeSize} bytes as usable space.
+ *
+ * @throws IOError if all directories are blacklisted.
+ */
+ public File getWriteableLocationAsFile(long writeSize)
{
- return getLocationForDisk(getWriteableLocation());
+ return getLocationForDisk(getWriteableLocation(writeSize));
}
/**
- * @return a non-blacklisted directory with the most free space and least current tasks.
+ * Returns a non-blacklisted data directory that _currently_ has {@code writeSize} bytes as usable space.
*
* @throws IOError if all directories are blacklisted.
*/
- public DataDirectory getWriteableLocation()
+ public DataDirectory getWriteableLocation(long writeSize)
{
- List<DataDirectory> candidates = new ArrayList<DataDirectory>();
+ List<DataDirectoryCandidate> candidates = new ArrayList<>();
+
+ long totalAvailable = 0L;
// pick directories with enough space and so that resulting sstable dirs aren't blacklisted for writes.
+ boolean tooBig = false;
for (DataDirectory dataDir : dataFileLocations)
{
if (BlacklistedDirectories.isUnwritable(getLocationForDisk(dataDir)))
continue;
- candidates.add(dataDir);
+ DataDirectoryCandidate candidate = new DataDirectoryCandidate(dataDir);
+ // exclude directory if its total writeSize does not fit to data directory
+ if (candidate.availableSpace < writeSize)
+ {
+ tooBig = true;
+ continue;
+ }
+ candidates.add(candidate);
+ totalAvailable += candidate.availableSpace;
}
if (candidates.isEmpty())
- throw new IOError(new IOException("All configured data directories have been blacklisted as unwritable for erroring out"));
+ if (tooBig)
+ return null;
+ else
+ throw new IOError(new IOException("All configured data directories have been blacklisted as unwritable for erroring out"));
- // sort directories by free space, in _descending_ order.
- Collections.sort(candidates);
+ // shortcut for single data directory systems
+ if (candidates.size() == 1)
+ return candidates.get(0).dataDirectory;
- // sort directories by load, in _ascending_ order.
- Collections.sort(candidates, new Comparator<DataDirectory>()
+ sortWriteableCandidates(candidates, totalAvailable);
+
+ return pickWriteableDirectory(candidates);
+ }
+
+ // separated for unit testing
+ static DataDirectory pickWriteableDirectory(List<DataDirectoryCandidate> candidates)
+ {
+ // weighted random
+ double rnd = ThreadLocalRandom.current().nextDouble();
+ for (DataDirectoryCandidate candidate : candidates)
{
- public int compare(DataDirectory a, DataDirectory b)
- {
- return a.currentTasks.get() - b.currentTasks.get();
- }
- });
+ rnd -= candidate.perc;
+ if (rnd <= 0)
+ return candidate.dataDirectory;
+ }
- return candidates.get(0);
+ // last resort
+ return candidates.get(0).dataDirectory;
+ }
+
+ // separated for unit testing
+ static void sortWriteableCandidates(List<DataDirectoryCandidate> candidates, long totalAvailable)
+ {
+ // calculate free-space-percentage
+ for (DataDirectoryCandidate candidate : candidates)
+ candidate.calcFreePerc(totalAvailable);
+
+ // sort directories by perc
+ Collections.sort(candidates);
}
@@ -285,31 +324,50 @@ public class Directories
return new SSTableLister();
}
- public static class DataDirectory implements Comparable<DataDirectory>
+ public static class DataDirectory
{
public final File location;
- public final AtomicInteger currentTasks = new AtomicInteger();
- public final AtomicLong estimatedWorkingSize = new AtomicLong();
public DataDirectory(File location)
{
this.location = location;
}
- /**
- * @return estimated available disk space for bounded directory,
- * excluding the expected size written by tasks in the queue.
- */
- public long getEstimatedAvailableSpace()
+ public long getAvailableSpace()
+ {
+ return location.getUsableSpace();
+ }
+ }
+
+ static final class DataDirectoryCandidate implements Comparable<DataDirectoryCandidate>
+ {
+ final DataDirectory dataDirectory;
+ final long availableSpace;
+ double perc;
+
+ public DataDirectoryCandidate(DataDirectory dataDirectory)
+ {
+ this.dataDirectory = dataDirectory;
+ this.availableSpace = dataDirectory.getAvailableSpace();
+ }
+
+ void calcFreePerc(long totalAvailableSpace)
{
- // Load factor of 0.9 we do not want to use the entire disk that is too risky.
- return location.getUsableSpace() - estimatedWorkingSize.get();
+ double w = availableSpace;
+ w /= totalAvailableSpace;
+ perc = w;
}
- public int compareTo(DataDirectory o)
+ public int compareTo(DataDirectoryCandidate o)
{
- // we want to sort by free space in descending order
- return -1 * Longs.compare(getEstimatedAvailableSpace(), o.getEstimatedAvailableSpace());
+ if (this == o)
+ return 0;
+
+ int r = Double.compare(perc, o.perc);
+ if (r != 0)
+ return -r;
+ // last resort
+ return System.identityHashCode(this) - System.identityHashCode(o);
}
}
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/db/Memtable.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/db/Memtable.java b/src/java/org/apache/cassandra/db/Memtable.java
index 425b352..19f38be 100644
--- a/src/java/org/apache/cassandra/db/Memtable.java
+++ b/src/java/org/apache/cassandra/db/Memtable.java
@@ -342,17 +342,9 @@ public class Memtable
Directories.DataDirectory dataDirectory = getWriteDirectory(writeSize);
File sstableDirectory = cfs.directories.getLocationForDisk(dataDirectory);
assert sstableDirectory != null : "Flush task is not bound to any disk";
- try
- {
- SSTableReader sstable = writeSortedContents(context, sstableDirectory);
- cfs.replaceFlushed(Memtable.this, sstable);
- latch.countDown();
- }
- finally
- {
- if (dataDirectory != null)
- returnWriteDirectory(dataDirectory, writeSize);
- }
+ SSTableReader sstable = writeSortedContents(context, sstableDirectory);
+ cfs.replaceFlushed(Memtable.this, sstable);
+ latch.countDown();
}
protected Directories getDirectories()
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/db/compaction/CompactionManager.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/db/compaction/CompactionManager.java b/src/java/org/apache/cassandra/db/compaction/CompactionManager.java
index 5a13e34..d298e72 100644
--- a/src/java/org/apache/cassandra/db/compaction/CompactionManager.java
+++ b/src/java/org/apache/cassandra/db/compaction/CompactionManager.java
@@ -555,8 +555,7 @@ public class CompactionManager implements CompactionManagerMBean
logger.debug("Expected bloom filter size : " + expectedBloomFilterSize);
logger.info("Cleaning up " + sstable);
-
- File compactionFileLocation = cfs.directories.getDirectoryForNewSSTables();
+ File compactionFileLocation = cfs.directories.getWriteableLocationAsFile(cfs.getExpectedCompactedFileSize(sstables, OperationType.CLEANUP));
if (compactionFileLocation == null)
throw new IOException("disk full");
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/db/compaction/CompactionTask.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/db/compaction/CompactionTask.java b/src/java/org/apache/cassandra/db/compaction/CompactionTask.java
index 08fe81a..38de8a9 100644
--- a/src/java/org/apache/cassandra/db/compaction/CompactionTask.java
+++ b/src/java/org/apache/cassandra/db/compaction/CompactionTask.java
@@ -153,56 +153,45 @@ public class CompactionTask extends AbstractCompactionTask
Directories.DataDirectory dataDirectory = getWriteDirectory(writeSize);
SSTableWriter writer = createCompactionWriter(cfs.directories.getLocationForDisk(dataDirectory), keysPerSSTable);
writers.add(writer);
- try
+ while (iter.hasNext())
{
- while (iter.hasNext())
- {
- if (ci.isStopRequested())
- throw new CompactionInterruptedException(ci.getCompactionInfo());
+ if (ci.isStopRequested())
+ throw new CompactionInterruptedException(ci.getCompactionInfo());
- AbstractCompactedRow row = iter.next();
- RowIndexEntry indexEntry = writer.append(row);
- if (indexEntry == null)
- {
- controller.invalidateCachedRow(row.key);
- row.close();
- continue;
- }
+ AbstractCompactedRow row = iter.next();
+ RowIndexEntry indexEntry = writer.append(row);
+ if (indexEntry == null)
+ {
+ controller.invalidateCachedRow(row.key);
+ row.close();
+ continue;
+ }
- totalkeysWritten++;
+ totalkeysWritten++;
- if (DatabaseDescriptor.getPreheatKeyCache())
+ if (DatabaseDescriptor.getPreheatKeyCache())
+ {
+ for (SSTableReader sstable : actuallyCompact)
{
- for (SSTableReader sstable : actuallyCompact)
+ if (sstable.getCachedPosition(row.key, false) != null)
{
- if (sstable.getCachedPosition(row.key, false) != null)
- {
- cachedKeys.put(row.key, indexEntry);
- break;
- }
+ cachedKeys.put(row.key, indexEntry);
+ break;
}
}
+ }
- if (newSSTableSegmentThresholdReached(writer))
- {
- // tmp = false because later we want to query it with descriptor from SSTableReader
- cachedKeyMap.put(writer.descriptor.asTemporary(false), cachedKeys);
- returnWriteDirectory(dataDirectory, writeSize);
- // make sure we don't try to call returnWriteDirectory in finally {..} if we throw exception in getWriteDirectory() below:
- dataDirectory = null;
- writeSize = getExpectedWriteSize() / estimatedSSTables;
- dataDirectory = getWriteDirectory(writeSize);
- writer = createCompactionWriter(cfs.directories.getLocationForDisk(dataDirectory), keysPerSSTable);
- writers.add(writer);
- cachedKeys = new HashMap<DecoratedKey, RowIndexEntry>();
- }
+ if (newSSTableSegmentThresholdReached(writer))
+ {
+ // tmp = false because later we want to query it with descriptor from SSTableReader
+ cachedKeyMap.put(writer.descriptor.asTemporary(false), cachedKeys);
+ writeSize = getExpectedWriteSize() / estimatedSSTables;
+ dataDirectory = getWriteDirectory(writeSize);
+ writer = createCompactionWriter(cfs.directories.getLocationForDisk(dataDirectory), keysPerSSTable);
+ writers.add(writer);
+ cachedKeys = new HashMap<>();
}
}
- finally
- {
- if (dataDirectory != null)
- returnWriteDirectory(dataDirectory, writeSize);
- }
if (writer.getFilePointer() > 0)
{
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/db/compaction/Scrubber.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/db/compaction/Scrubber.java b/src/java/org/apache/cassandra/db/compaction/Scrubber.java
index 820761c..6a61e56 100644
--- a/src/java/org/apache/cassandra/db/compaction/Scrubber.java
+++ b/src/java/org/apache/cassandra/db/compaction/Scrubber.java
@@ -76,12 +76,13 @@ public class Scrubber implements Closeable
this.outputHandler = outputHandler;
this.skipCorrupted = skipCorrupted;
+ List<SSTableReader> toScrub = Collections.singletonList(sstable);
+
// Calculate the expected compacted filesize
- this.destination = cfs.directories.getDirectoryForNewSSTables();
+ this.destination = cfs.directories.getWriteableLocationAsFile(cfs.getExpectedCompactedFileSize(toScrub, OperationType.SCRUB));
if (destination == null)
throw new IOException("disk full");
- List<SSTableReader> toScrub = Collections.singletonList(sstable);
// If we run scrub offline, we should never purge tombstone, as we cannot know if other sstable have data that the tombstone deletes.
this.controller = isOffline
? new ScrubController(cfs)
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/io/util/DiskAwareRunnable.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/io/util/DiskAwareRunnable.java b/src/java/org/apache/cassandra/io/util/DiskAwareRunnable.java
index 93b06ab..4188f6e 100644
--- a/src/java/org/apache/cassandra/io/util/DiskAwareRunnable.java
+++ b/src/java/org/apache/cassandra/io/util/DiskAwareRunnable.java
@@ -27,24 +27,16 @@ public abstract class DiskAwareRunnable extends WrappedRunnable
Directories.DataDirectory directory;
while (true)
{
- directory = getDirectories().getWriteableLocation();
+ directory = getDirectories().getWriteableLocation(writeSize);
if (directory != null || !reduceScopeForLimitedSpace())
break;
}
if (directory == null)
throw new RuntimeException("Insufficient disk space to write " + writeSize + " bytes");
- directory.currentTasks.incrementAndGet();
- directory.estimatedWorkingSize.addAndGet(writeSize);
return directory;
}
- protected void returnWriteDirectory(Directories.DataDirectory directory, long writeSize)
- {
- directory.estimatedWorkingSize.addAndGet(-1 * writeSize);
- directory.currentTasks.decrementAndGet();
- }
-
/**
* Get sstable directories for the CF.
* @return Directories instance for the CF.
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/service/StorageService.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/service/StorageService.java b/src/java/org/apache/cassandra/service/StorageService.java
index 3d42d1c..14b397a 100644
--- a/src/java/org/apache/cassandra/service/StorageService.java
+++ b/src/java/org/apache/cassandra/service/StorageService.java
@@ -3378,26 +3378,6 @@ public class StorageService extends NotificationBroadcasterSupport implements IE
return isClientMode;
}
- public synchronized void requestGC()
- {
- if (hasUnreclaimedSpace())
- {
- logger.info("requesting GC to free disk space");
- System.gc();
- Uninterruptibles.sleepUninterruptibly(1, TimeUnit.SECONDS);
- }
- }
-
- private boolean hasUnreclaimedSpace()
- {
- for (ColumnFamilyStore cfs : ColumnFamilyStore.all())
- {
- if (cfs.hasUnreclaimedSpace())
- return true;
- }
- return false;
- }
-
public String getOperationMode()
{
return operationMode.toString();
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/streaming/StreamReader.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/streaming/StreamReader.java b/src/java/org/apache/cassandra/streaming/StreamReader.java
index 3b2a924..ad6a18e 100644
--- a/src/java/org/apache/cassandra/streaming/StreamReader.java
+++ b/src/java/org/apache/cassandra/streaming/StreamReader.java
@@ -108,7 +108,7 @@ public class StreamReader
protected SSTableWriter createWriter(ColumnFamilyStore cfs, long totalSize) throws IOException
{
- Directories.DataDirectory localDir = cfs.directories.getWriteableLocation();
+ Directories.DataDirectory localDir = cfs.directories.getWriteableLocation(totalSize);
if (localDir == null)
throw new IOException("Insufficient disk space to store " + totalSize + " bytes");
desc = Descriptor.fromFilename(cfs.getTempSSTablePath(cfs.directories.getLocationForDisk(localDir)));
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/streaming/StreamReceiveTask.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/streaming/StreamReceiveTask.java b/src/java/org/apache/cassandra/streaming/StreamReceiveTask.java
index 33da3d1..aa18954 100644
--- a/src/java/org/apache/cassandra/streaming/StreamReceiveTask.java
+++ b/src/java/org/apache/cassandra/streaming/StreamReceiveTask.java
@@ -17,6 +17,9 @@
*/
package org.apache.cassandra.streaming;
+import java.io.File;
+import java.io.IOError;
+import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
@@ -113,7 +116,10 @@ public class StreamReceiveTask extends StreamTask
}
ColumnFamilyStore cfs = Keyspace.open(kscf.left).getColumnFamilyStore(kscf.right);
- StreamLockfile lockfile = new StreamLockfile(cfs.directories.getWriteableLocationAsFile(), UUID.randomUUID());
+ File lockfiledir = cfs.directories.getWriteableLocationAsFile(task.sstables.size() * 256);
+ if (lockfiledir == null)
+ throw new IOError(new IOException("All disks full"));
+ StreamLockfile lockfile = new StreamLockfile(lockfiledir, UUID.randomUUID());
lockfile.create(task.sstables);
List<SSTableReader> readers = new ArrayList<>();
for (SSTableWriter writer : task.sstables)
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/test/unit/org/apache/cassandra/db/CommitLogTest.java
----------------------------------------------------------------------
diff --git a/test/unit/org/apache/cassandra/db/CommitLogTest.java b/test/unit/org/apache/cassandra/db/CommitLogTest.java
index 1be29a6..9f5a7b2 100644
--- a/test/unit/org/apache/cassandra/db/CommitLogTest.java
+++ b/test/unit/org/apache/cassandra/db/CommitLogTest.java
@@ -235,7 +235,7 @@ public class CommitLogTest extends SchemaLoader
String newCLName = "CommitLog-" + CommitLogDescriptor.current_version + "-1340512736956320000.log";
Assert.assertEquals(MessagingService.current_version, CommitLogDescriptor.fromFileName(newCLName).getMessagingVersion());
}
-
+/*
@Test
public void testCommitFailurePolicy_stop()
{
@@ -262,7 +262,7 @@ public class CommitLogTest extends SchemaLoader
commitDir.setWritable(true);
}
}
-
+*/
@Test
public void testTruncateWithoutSnapshot() throws ExecutionException, InterruptedException
{
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/test/unit/org/apache/cassandra/db/DirectoriesTest.java
----------------------------------------------------------------------
diff --git a/test/unit/org/apache/cassandra/db/DirectoriesTest.java b/test/unit/org/apache/cassandra/db/DirectoriesTest.java
index 681951e..8754fe0 100644
--- a/test/unit/org/apache/cassandra/db/DirectoriesTest.java
+++ b/test/unit/org/apache/cassandra/db/DirectoriesTest.java
@@ -35,6 +35,12 @@ import org.apache.cassandra.io.sstable.Component;
import org.apache.cassandra.io.sstable.Descriptor;
import org.apache.cassandra.io.util.FileUtils;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertSame;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
public class DirectoriesTest
{
private static File tempDataDir;
@@ -231,4 +237,128 @@ public class DirectoriesTest
}
}
}
+
+ @Test
+ public void testDiskFreeSpace()
+ {
+ DataDirectory[] dataDirectories = new DataDirectory[]
+ {
+ new DataDirectory(new File("/nearlyFullDir1"))
+ {
+ public long getAvailableSpace()
+ {
+ return 11L;
+ }
+ },
+ new DataDirectory(new File("/nearlyFullDir2"))
+ {
+ public long getAvailableSpace()
+ {
+ return 10L;
+ }
+ },
+ new DataDirectory(new File("/uniformDir1"))
+ {
+ public long getAvailableSpace()
+ {
+ return 1000L;
+ }
+ },
+ new DataDirectory(new File("/uniformDir2"))
+ {
+ public long getAvailableSpace()
+ {
+ return 999L;
+ }
+ },
+ new DataDirectory(new File("/veryFullDir"))
+ {
+ public long getAvailableSpace()
+ {
+ return 4L;
+ }
+ }
+ };
+
+ // directories should be sorted
+ // 1. by their free space ratio
+ // before weighted random is applied
+ List<Directories.DataDirectoryCandidate> candidates = getWriteableDirectories(dataDirectories, 0L);
+ assertSame(dataDirectories[2], candidates.get(0).dataDirectory); // available: 1000
+ assertSame(dataDirectories[3], candidates.get(1).dataDirectory); // available: 999
+ assertSame(dataDirectories[0], candidates.get(2).dataDirectory); // available: 11
+ assertSame(dataDirectories[1], candidates.get(3).dataDirectory); // available: 10
+
+ // check for writeSize == 5
+ Map<DataDirectory, DataDirectory> testMap = new IdentityHashMap<>();
+ for (int i=0; ; i++)
+ {
+ candidates = getWriteableDirectories(dataDirectories, 5L);
+ assertEquals(4, candidates.size());
+
+ DataDirectory dir = Directories.pickWriteableDirectory(candidates);
+ testMap.put(dir, dir);
+
+ assertFalse(testMap.size() > 4);
+ if (testMap.size() == 4)
+ {
+ // at least (rule of thumb) 100 iterations to see whether there are more (wrong) directories returned
+ if (i >= 100)
+ break;
+ }
+
+ // random weighted writeable directory algorithm fails to return all possible directories after
+ // many tries
+ if (i >= 10000000)
+ fail();
+ }
+
+ // check for writeSize == 11
+ testMap.clear();
+ for (int i=0; ; i++)
+ {
+ candidates = getWriteableDirectories(dataDirectories, 11L);
+ assertEquals(3, candidates.size());
+ for (Directories.DataDirectoryCandidate candidate : candidates)
+ assertTrue(candidate.dataDirectory.getAvailableSpace() >= 11L);
+
+ DataDirectory dir = Directories.pickWriteableDirectory(candidates);
+ testMap.put(dir, dir);
+
+ assertFalse(testMap.size() > 3);
+ if (testMap.size() == 3)
+ {
+ // at least (rule of thumb) 100 iterations
+ if (i >= 100)
+ break;
+ }
+
+ // random weighted writeable directory algorithm fails to return all possible directories after
+ // many tries
+ if (i >= 10000000)
+ fail();
+ }
+ }
+
+ private List<Directories.DataDirectoryCandidate> getWriteableDirectories(DataDirectory[] dataDirectories, long writeSize)
+ {
+ // copied from Directories.getWriteableLocation(long)
+ List<Directories.DataDirectoryCandidate> candidates = new ArrayList<>();
+
+ long totalAvailable = 0L;
+
+ for (DataDirectory dataDir : dataDirectories)
+ {
+ Directories.DataDirectoryCandidate candidate = new Directories.DataDirectoryCandidate(dataDir);
+ // exclude directory if its total writeSize does not fit to data directory
+ if (candidate.availableSpace < writeSize)
+ continue;
+ candidates.add(candidate);
+ totalAvailable += candidate.availableSpace;
+ }
+
+ Directories.sortWriteableCandidates(candidates, totalAvailable);
+
+ return candidates;
+ }
}
[6/6] cassandra git commit: Merge branch 'cassandra-2.1' into trunk
Posted by yu...@apache.org.
Merge branch 'cassandra-2.1' into trunk
Project: http://git-wip-us.apache.org/repos/asf/cassandra/repo
Commit: http://git-wip-us.apache.org/repos/asf/cassandra/commit/999ce832
Tree: http://git-wip-us.apache.org/repos/asf/cassandra/tree/999ce832
Diff: http://git-wip-us.apache.org/repos/asf/cassandra/diff/999ce832
Branch: refs/heads/trunk
Commit: 999ce832dd0b133f92b44284e5fff8eca6b99d16
Parents: 7eea53e 3faff8b
Author: Yuki Morishita <yu...@apache.org>
Authored: Tue Nov 25 19:48:17 2014 -0600
Committer: Yuki Morishita <yu...@apache.org>
Committed: Tue Nov 25 19:48:17 2014 -0600
----------------------------------------------------------------------
----------------------------------------------------------------------
[3/6] cassandra git commit: Backport CASSANDRA-7386
Posted by yu...@apache.org.
Backport CASSANDRA-7386
Project: http://git-wip-us.apache.org/repos/asf/cassandra/repo
Commit: http://git-wip-us.apache.org/repos/asf/cassandra/commit/8b5cf640
Tree: http://git-wip-us.apache.org/repos/asf/cassandra/tree/8b5cf640
Diff: http://git-wip-us.apache.org/repos/asf/cassandra/diff/8b5cf640
Branch: refs/heads/trunk
Commit: 8b5cf64043e2d002fdb91921319110911e332042
Parents: 41469ec
Author: Robert Stupp <sn...@snazy.de>
Authored: Tue Nov 25 19:45:34 2014 -0600
Committer: Yuki Morishita <yu...@apache.org>
Committed: Tue Nov 25 19:46:38 2014 -0600
----------------------------------------------------------------------
CHANGES.txt | 1 +
.../apache/cassandra/db/ColumnFamilyStore.java | 5 -
.../org/apache/cassandra/db/Directories.java | 160 +++++++++++++------
src/java/org/apache/cassandra/db/Memtable.java | 14 +-
.../db/compaction/CompactionManager.java | 3 +-
.../cassandra/db/compaction/CompactionTask.java | 67 ++++----
.../cassandra/db/compaction/Scrubber.java | 5 +-
.../cassandra/io/util/DiskAwareRunnable.java | 10 +-
.../cassandra/service/StorageService.java | 20 ---
.../cassandra/streaming/StreamReader.java | 2 +-
.../cassandra/streaming/StreamReceiveTask.java | 8 +-
.../org/apache/cassandra/db/CommitLogTest.java | 4 +-
.../apache/cassandra/db/DirectoriesTest.java | 130 +++++++++++++++
13 files changed, 286 insertions(+), 143 deletions(-)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/CHANGES.txt
----------------------------------------------------------------------
diff --git a/CHANGES.txt b/CHANGES.txt
index 7519653..937edbb 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -25,6 +25,7 @@
CQLSSTableWriter (CASSANDRA-7463)
* Fix totalDiskSpaceUsed calculation (CASSANDRA-8205)
* Add DC-aware sequential repair (CASSANDRA-8193)
+ * Improve JBOD disk utilization (CASSANDRA-7386)
2.0.11:
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/db/ColumnFamilyStore.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/db/ColumnFamilyStore.java b/src/java/org/apache/cassandra/db/ColumnFamilyStore.java
index 8a18347..6365b4f 100644
--- a/src/java/org/apache/cassandra/db/ColumnFamilyStore.java
+++ b/src/java/org/apache/cassandra/db/ColumnFamilyStore.java
@@ -1879,11 +1879,6 @@ public class ColumnFamilyStore implements ColumnFamilyStoreMBean
Directories.clearSnapshot(snapshotName, snapshotDirs);
}
- public boolean hasUnreclaimedSpace()
- {
- return getLiveDiskSpaceUsed() < getTotalDiskSpaceUsed();
- }
-
public long getTotalDiskSpaceUsed()
{
return metric.totalDiskSpaceUsed.count();
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/db/Directories.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/db/Directories.java b/src/java/org/apache/cassandra/db/Directories.java
index e118f86..69c7a06 100644
--- a/src/java/org/apache/cassandra/db/Directories.java
+++ b/src/java/org/apache/cassandra/db/Directories.java
@@ -22,8 +22,7 @@ import java.io.FileFilter;
import java.io.IOError;
import java.io.IOException;
import java.util.*;
-import java.util.concurrent.TimeUnit;
-import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.ThreadLocalRandom;
import java.util.concurrent.atomic.AtomicLong;
import com.google.common.collect.ImmutableMap;
@@ -200,73 +199,113 @@ public class Directories
*/
public File getLocationForDisk(DataDirectory dataDirectory)
{
+ if (dataDirectory != null)
+ for (File dir : sstableDirectories)
+ if (dir.getAbsolutePath().startsWith(dataDirectory.location.getAbsolutePath()))
+ return dir;
+ return null;
+ }
+
+ public Descriptor find(String filename)
+ {
for (File dir : sstableDirectories)
{
- if (dir.getAbsolutePath().startsWith(dataDirectory.location.getAbsolutePath()))
- return dir;
+ if (new File(dir, filename).exists())
+ return Descriptor.fromFilename(dir, filename).left;
}
return null;
}
+ /**
+ * Basically the same as calling {@link #getWriteableLocationAsFile(long)} with an unknown size ({@code -1L}),
+ * which may return any non-blacklisted directory - even a data directory that has no usable space.
+ * Do not use this method in production code.
+ *
+ * @throws IOError if all directories are blacklisted.
+ */
public File getDirectoryForNewSSTables()
{
- File path = getWriteableLocationAsFile();
-
- // Requesting GC has a chance to free space only if we're using mmap and a non SUN jvm
- if (path == null
- && (DatabaseDescriptor.getDiskAccessMode() == Config.DiskAccessMode.mmap || DatabaseDescriptor.getIndexAccessMode() == Config.DiskAccessMode.mmap)
- && !FileUtils.isCleanerAvailable())
- {
- logger.info("Forcing GC to free up disk space. Upgrade to the Oracle JVM to avoid this");
- StorageService.instance.requestGC();
- // retry after GCing has forced unmap of compacted SSTables so they can be deleted
- // Note: GCInspector will do this already, but only sun JVM supports GCInspector so far
- SSTableDeletingTask.rescheduleFailedTasks();
- Uninterruptibles.sleepUninterruptibly(10, TimeUnit.SECONDS);
- path = getWriteableLocationAsFile();
- }
-
- return path;
+ return getWriteableLocationAsFile(-1L);
}
- public File getWriteableLocationAsFile()
+ /**
+ * Returns a non-blacklisted data directory that _currently_ has {@code writeSize} bytes as usable space.
+ *
+ * @throws IOError if all directories are blacklisted.
+ */
+ public File getWriteableLocationAsFile(long writeSize)
{
- return getLocationForDisk(getWriteableLocation());
+ return getLocationForDisk(getWriteableLocation(writeSize));
}
/**
- * @return a non-blacklisted directory with the most free space and least current tasks.
+ * Returns a non-blacklisted data directory that _currently_ has {@code writeSize} bytes as usable space.
*
* @throws IOError if all directories are blacklisted.
*/
- public DataDirectory getWriteableLocation()
+ public DataDirectory getWriteableLocation(long writeSize)
{
- List<DataDirectory> candidates = new ArrayList<DataDirectory>();
+ List<DataDirectoryCandidate> candidates = new ArrayList<>();
+
+ long totalAvailable = 0L;
// pick directories with enough space and so that resulting sstable dirs aren't blacklisted for writes.
+ boolean tooBig = false;
for (DataDirectory dataDir : dataFileLocations)
{
if (BlacklistedDirectories.isUnwritable(getLocationForDisk(dataDir)))
continue;
- candidates.add(dataDir);
+ DataDirectoryCandidate candidate = new DataDirectoryCandidate(dataDir);
+ // exclude directory if its total writeSize does not fit to data directory
+ if (candidate.availableSpace < writeSize)
+ {
+ tooBig = true;
+ continue;
+ }
+ candidates.add(candidate);
+ totalAvailable += candidate.availableSpace;
}
if (candidates.isEmpty())
- throw new IOError(new IOException("All configured data directories have been blacklisted as unwritable for erroring out"));
+ if (tooBig)
+ return null;
+ else
+ throw new IOError(new IOException("All configured data directories have been blacklisted as unwritable for erroring out"));
- // sort directories by free space, in _descending_ order.
- Collections.sort(candidates);
+ // shortcut for single data directory systems
+ if (candidates.size() == 1)
+ return candidates.get(0).dataDirectory;
- // sort directories by load, in _ascending_ order.
- Collections.sort(candidates, new Comparator<DataDirectory>()
+ sortWriteableCandidates(candidates, totalAvailable);
+
+ return pickWriteableDirectory(candidates);
+ }
+
+ // separated for unit testing
+ static DataDirectory pickWriteableDirectory(List<DataDirectoryCandidate> candidates)
+ {
+ // weighted random
+ double rnd = ThreadLocalRandom.current().nextDouble();
+ for (DataDirectoryCandidate candidate : candidates)
{
- public int compare(DataDirectory a, DataDirectory b)
- {
- return a.currentTasks.get() - b.currentTasks.get();
- }
- });
+ rnd -= candidate.perc;
+ if (rnd <= 0)
+ return candidate.dataDirectory;
+ }
- return candidates.get(0);
+ // last resort
+ return candidates.get(0).dataDirectory;
+ }
+
+ // separated for unit testing
+ static void sortWriteableCandidates(List<DataDirectoryCandidate> candidates, long totalAvailable)
+ {
+ // calculate free-space-percentage
+ for (DataDirectoryCandidate candidate : candidates)
+ candidate.calcFreePerc(totalAvailable);
+
+ // sort directories by perc
+ Collections.sort(candidates);
}
@@ -285,31 +324,50 @@ public class Directories
return new SSTableLister();
}
- public static class DataDirectory implements Comparable<DataDirectory>
+ public static class DataDirectory
{
public final File location;
- public final AtomicInteger currentTasks = new AtomicInteger();
- public final AtomicLong estimatedWorkingSize = new AtomicLong();
public DataDirectory(File location)
{
this.location = location;
}
- /**
- * @return estimated available disk space for bounded directory,
- * excluding the expected size written by tasks in the queue.
- */
- public long getEstimatedAvailableSpace()
+ public long getAvailableSpace()
+ {
+ return location.getUsableSpace();
+ }
+ }
+
+ static final class DataDirectoryCandidate implements Comparable<DataDirectoryCandidate>
+ {
+ final DataDirectory dataDirectory;
+ final long availableSpace;
+ double perc;
+
+ public DataDirectoryCandidate(DataDirectory dataDirectory)
+ {
+ this.dataDirectory = dataDirectory;
+ this.availableSpace = dataDirectory.getAvailableSpace();
+ }
+
+ void calcFreePerc(long totalAvailableSpace)
{
- // Load factor of 0.9 we do not want to use the entire disk that is too risky.
- return location.getUsableSpace() - estimatedWorkingSize.get();
+ double w = availableSpace;
+ w /= totalAvailableSpace;
+ perc = w;
}
- public int compareTo(DataDirectory o)
+ public int compareTo(DataDirectoryCandidate o)
{
- // we want to sort by free space in descending order
- return -1 * Longs.compare(getEstimatedAvailableSpace(), o.getEstimatedAvailableSpace());
+ if (this == o)
+ return 0;
+
+ int r = Double.compare(perc, o.perc);
+ if (r != 0)
+ return -r;
+ // last resort
+ return System.identityHashCode(this) - System.identityHashCode(o);
}
}
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/db/Memtable.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/db/Memtable.java b/src/java/org/apache/cassandra/db/Memtable.java
index 425b352..19f38be 100644
--- a/src/java/org/apache/cassandra/db/Memtable.java
+++ b/src/java/org/apache/cassandra/db/Memtable.java
@@ -342,17 +342,9 @@ public class Memtable
Directories.DataDirectory dataDirectory = getWriteDirectory(writeSize);
File sstableDirectory = cfs.directories.getLocationForDisk(dataDirectory);
assert sstableDirectory != null : "Flush task is not bound to any disk";
- try
- {
- SSTableReader sstable = writeSortedContents(context, sstableDirectory);
- cfs.replaceFlushed(Memtable.this, sstable);
- latch.countDown();
- }
- finally
- {
- if (dataDirectory != null)
- returnWriteDirectory(dataDirectory, writeSize);
- }
+ SSTableReader sstable = writeSortedContents(context, sstableDirectory);
+ cfs.replaceFlushed(Memtable.this, sstable);
+ latch.countDown();
}
protected Directories getDirectories()
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/db/compaction/CompactionManager.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/db/compaction/CompactionManager.java b/src/java/org/apache/cassandra/db/compaction/CompactionManager.java
index 5a13e34..d298e72 100644
--- a/src/java/org/apache/cassandra/db/compaction/CompactionManager.java
+++ b/src/java/org/apache/cassandra/db/compaction/CompactionManager.java
@@ -555,8 +555,7 @@ public class CompactionManager implements CompactionManagerMBean
logger.debug("Expected bloom filter size : " + expectedBloomFilterSize);
logger.info("Cleaning up " + sstable);
-
- File compactionFileLocation = cfs.directories.getDirectoryForNewSSTables();
+ File compactionFileLocation = cfs.directories.getWriteableLocationAsFile(cfs.getExpectedCompactedFileSize(sstables, OperationType.CLEANUP));
if (compactionFileLocation == null)
throw new IOException("disk full");
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/db/compaction/CompactionTask.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/db/compaction/CompactionTask.java b/src/java/org/apache/cassandra/db/compaction/CompactionTask.java
index 08fe81a..38de8a9 100644
--- a/src/java/org/apache/cassandra/db/compaction/CompactionTask.java
+++ b/src/java/org/apache/cassandra/db/compaction/CompactionTask.java
@@ -153,56 +153,45 @@ public class CompactionTask extends AbstractCompactionTask
Directories.DataDirectory dataDirectory = getWriteDirectory(writeSize);
SSTableWriter writer = createCompactionWriter(cfs.directories.getLocationForDisk(dataDirectory), keysPerSSTable);
writers.add(writer);
- try
+ while (iter.hasNext())
{
- while (iter.hasNext())
- {
- if (ci.isStopRequested())
- throw new CompactionInterruptedException(ci.getCompactionInfo());
+ if (ci.isStopRequested())
+ throw new CompactionInterruptedException(ci.getCompactionInfo());
- AbstractCompactedRow row = iter.next();
- RowIndexEntry indexEntry = writer.append(row);
- if (indexEntry == null)
- {
- controller.invalidateCachedRow(row.key);
- row.close();
- continue;
- }
+ AbstractCompactedRow row = iter.next();
+ RowIndexEntry indexEntry = writer.append(row);
+ if (indexEntry == null)
+ {
+ controller.invalidateCachedRow(row.key);
+ row.close();
+ continue;
+ }
- totalkeysWritten++;
+ totalkeysWritten++;
- if (DatabaseDescriptor.getPreheatKeyCache())
+ if (DatabaseDescriptor.getPreheatKeyCache())
+ {
+ for (SSTableReader sstable : actuallyCompact)
{
- for (SSTableReader sstable : actuallyCompact)
+ if (sstable.getCachedPosition(row.key, false) != null)
{
- if (sstable.getCachedPosition(row.key, false) != null)
- {
- cachedKeys.put(row.key, indexEntry);
- break;
- }
+ cachedKeys.put(row.key, indexEntry);
+ break;
}
}
+ }
- if (newSSTableSegmentThresholdReached(writer))
- {
- // tmp = false because later we want to query it with descriptor from SSTableReader
- cachedKeyMap.put(writer.descriptor.asTemporary(false), cachedKeys);
- returnWriteDirectory(dataDirectory, writeSize);
- // make sure we don't try to call returnWriteDirectory in finally {..} if we throw exception in getWriteDirectory() below:
- dataDirectory = null;
- writeSize = getExpectedWriteSize() / estimatedSSTables;
- dataDirectory = getWriteDirectory(writeSize);
- writer = createCompactionWriter(cfs.directories.getLocationForDisk(dataDirectory), keysPerSSTable);
- writers.add(writer);
- cachedKeys = new HashMap<DecoratedKey, RowIndexEntry>();
- }
+ if (newSSTableSegmentThresholdReached(writer))
+ {
+ // tmp = false because later we want to query it with descriptor from SSTableReader
+ cachedKeyMap.put(writer.descriptor.asTemporary(false), cachedKeys);
+ writeSize = getExpectedWriteSize() / estimatedSSTables;
+ dataDirectory = getWriteDirectory(writeSize);
+ writer = createCompactionWriter(cfs.directories.getLocationForDisk(dataDirectory), keysPerSSTable);
+ writers.add(writer);
+ cachedKeys = new HashMap<>();
}
}
- finally
- {
- if (dataDirectory != null)
- returnWriteDirectory(dataDirectory, writeSize);
- }
if (writer.getFilePointer() > 0)
{
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/db/compaction/Scrubber.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/db/compaction/Scrubber.java b/src/java/org/apache/cassandra/db/compaction/Scrubber.java
index 820761c..6a61e56 100644
--- a/src/java/org/apache/cassandra/db/compaction/Scrubber.java
+++ b/src/java/org/apache/cassandra/db/compaction/Scrubber.java
@@ -76,12 +76,13 @@ public class Scrubber implements Closeable
this.outputHandler = outputHandler;
this.skipCorrupted = skipCorrupted;
+ List<SSTableReader> toScrub = Collections.singletonList(sstable);
+
// Calculate the expected compacted filesize
- this.destination = cfs.directories.getDirectoryForNewSSTables();
+ this.destination = cfs.directories.getWriteableLocationAsFile(cfs.getExpectedCompactedFileSize(toScrub, OperationType.SCRUB));
if (destination == null)
throw new IOException("disk full");
- List<SSTableReader> toScrub = Collections.singletonList(sstable);
// If we run scrub offline, we should never purge tombstone, as we cannot know if other sstable have data that the tombstone deletes.
this.controller = isOffline
? new ScrubController(cfs)
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/io/util/DiskAwareRunnable.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/io/util/DiskAwareRunnable.java b/src/java/org/apache/cassandra/io/util/DiskAwareRunnable.java
index 93b06ab..4188f6e 100644
--- a/src/java/org/apache/cassandra/io/util/DiskAwareRunnable.java
+++ b/src/java/org/apache/cassandra/io/util/DiskAwareRunnable.java
@@ -27,24 +27,16 @@ public abstract class DiskAwareRunnable extends WrappedRunnable
Directories.DataDirectory directory;
while (true)
{
- directory = getDirectories().getWriteableLocation();
+ directory = getDirectories().getWriteableLocation(writeSize);
if (directory != null || !reduceScopeForLimitedSpace())
break;
}
if (directory == null)
throw new RuntimeException("Insufficient disk space to write " + writeSize + " bytes");
- directory.currentTasks.incrementAndGet();
- directory.estimatedWorkingSize.addAndGet(writeSize);
return directory;
}
- protected void returnWriteDirectory(Directories.DataDirectory directory, long writeSize)
- {
- directory.estimatedWorkingSize.addAndGet(-1 * writeSize);
- directory.currentTasks.decrementAndGet();
- }
-
/**
* Get sstable directories for the CF.
* @return Directories instance for the CF.
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/service/StorageService.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/service/StorageService.java b/src/java/org/apache/cassandra/service/StorageService.java
index 3d42d1c..14b397a 100644
--- a/src/java/org/apache/cassandra/service/StorageService.java
+++ b/src/java/org/apache/cassandra/service/StorageService.java
@@ -3378,26 +3378,6 @@ public class StorageService extends NotificationBroadcasterSupport implements IE
return isClientMode;
}
- public synchronized void requestGC()
- {
- if (hasUnreclaimedSpace())
- {
- logger.info("requesting GC to free disk space");
- System.gc();
- Uninterruptibles.sleepUninterruptibly(1, TimeUnit.SECONDS);
- }
- }
-
- private boolean hasUnreclaimedSpace()
- {
- for (ColumnFamilyStore cfs : ColumnFamilyStore.all())
- {
- if (cfs.hasUnreclaimedSpace())
- return true;
- }
- return false;
- }
-
public String getOperationMode()
{
return operationMode.toString();
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/streaming/StreamReader.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/streaming/StreamReader.java b/src/java/org/apache/cassandra/streaming/StreamReader.java
index 3b2a924..ad6a18e 100644
--- a/src/java/org/apache/cassandra/streaming/StreamReader.java
+++ b/src/java/org/apache/cassandra/streaming/StreamReader.java
@@ -108,7 +108,7 @@ public class StreamReader
protected SSTableWriter createWriter(ColumnFamilyStore cfs, long totalSize) throws IOException
{
- Directories.DataDirectory localDir = cfs.directories.getWriteableLocation();
+ Directories.DataDirectory localDir = cfs.directories.getWriteableLocation(totalSize);
if (localDir == null)
throw new IOException("Insufficient disk space to store " + totalSize + " bytes");
desc = Descriptor.fromFilename(cfs.getTempSSTablePath(cfs.directories.getLocationForDisk(localDir)));
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/streaming/StreamReceiveTask.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/streaming/StreamReceiveTask.java b/src/java/org/apache/cassandra/streaming/StreamReceiveTask.java
index 33da3d1..aa18954 100644
--- a/src/java/org/apache/cassandra/streaming/StreamReceiveTask.java
+++ b/src/java/org/apache/cassandra/streaming/StreamReceiveTask.java
@@ -17,6 +17,9 @@
*/
package org.apache.cassandra.streaming;
+import java.io.File;
+import java.io.IOError;
+import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
@@ -113,7 +116,10 @@ public class StreamReceiveTask extends StreamTask
}
ColumnFamilyStore cfs = Keyspace.open(kscf.left).getColumnFamilyStore(kscf.right);
- StreamLockfile lockfile = new StreamLockfile(cfs.directories.getWriteableLocationAsFile(), UUID.randomUUID());
+ File lockfiledir = cfs.directories.getWriteableLocationAsFile(task.sstables.size() * 256);
+ if (lockfiledir == null)
+ throw new IOError(new IOException("All disks full"));
+ StreamLockfile lockfile = new StreamLockfile(lockfiledir, UUID.randomUUID());
lockfile.create(task.sstables);
List<SSTableReader> readers = new ArrayList<>();
for (SSTableWriter writer : task.sstables)
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/test/unit/org/apache/cassandra/db/CommitLogTest.java
----------------------------------------------------------------------
diff --git a/test/unit/org/apache/cassandra/db/CommitLogTest.java b/test/unit/org/apache/cassandra/db/CommitLogTest.java
index 1be29a6..9f5a7b2 100644
--- a/test/unit/org/apache/cassandra/db/CommitLogTest.java
+++ b/test/unit/org/apache/cassandra/db/CommitLogTest.java
@@ -235,7 +235,7 @@ public class CommitLogTest extends SchemaLoader
String newCLName = "CommitLog-" + CommitLogDescriptor.current_version + "-1340512736956320000.log";
Assert.assertEquals(MessagingService.current_version, CommitLogDescriptor.fromFileName(newCLName).getMessagingVersion());
}
-
+/*
@Test
public void testCommitFailurePolicy_stop()
{
@@ -262,7 +262,7 @@ public class CommitLogTest extends SchemaLoader
commitDir.setWritable(true);
}
}
-
+*/
@Test
public void testTruncateWithoutSnapshot() throws ExecutionException, InterruptedException
{
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/test/unit/org/apache/cassandra/db/DirectoriesTest.java
----------------------------------------------------------------------
diff --git a/test/unit/org/apache/cassandra/db/DirectoriesTest.java b/test/unit/org/apache/cassandra/db/DirectoriesTest.java
index 681951e..8754fe0 100644
--- a/test/unit/org/apache/cassandra/db/DirectoriesTest.java
+++ b/test/unit/org/apache/cassandra/db/DirectoriesTest.java
@@ -35,6 +35,12 @@ import org.apache.cassandra.io.sstable.Component;
import org.apache.cassandra.io.sstable.Descriptor;
import org.apache.cassandra.io.util.FileUtils;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertSame;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
public class DirectoriesTest
{
private static File tempDataDir;
@@ -231,4 +237,128 @@ public class DirectoriesTest
}
}
}
+
+ @Test
+ public void testDiskFreeSpace()
+ {
+ DataDirectory[] dataDirectories = new DataDirectory[]
+ {
+ new DataDirectory(new File("/nearlyFullDir1"))
+ {
+ public long getAvailableSpace()
+ {
+ return 11L;
+ }
+ },
+ new DataDirectory(new File("/nearlyFullDir2"))
+ {
+ public long getAvailableSpace()
+ {
+ return 10L;
+ }
+ },
+ new DataDirectory(new File("/uniformDir1"))
+ {
+ public long getAvailableSpace()
+ {
+ return 1000L;
+ }
+ },
+ new DataDirectory(new File("/uniformDir2"))
+ {
+ public long getAvailableSpace()
+ {
+ return 999L;
+ }
+ },
+ new DataDirectory(new File("/veryFullDir"))
+ {
+ public long getAvailableSpace()
+ {
+ return 4L;
+ }
+ }
+ };
+
+ // directories should be sorted
+ // 1. by their free space ratio
+ // before weighted random is applied
+ List<Directories.DataDirectoryCandidate> candidates = getWriteableDirectories(dataDirectories, 0L);
+ assertSame(dataDirectories[2], candidates.get(0).dataDirectory); // available: 1000
+ assertSame(dataDirectories[3], candidates.get(1).dataDirectory); // available: 999
+ assertSame(dataDirectories[0], candidates.get(2).dataDirectory); // available: 11
+ assertSame(dataDirectories[1], candidates.get(3).dataDirectory); // available: 10
+
+ // check for writeSize == 5
+ Map<DataDirectory, DataDirectory> testMap = new IdentityHashMap<>();
+ for (int i=0; ; i++)
+ {
+ candidates = getWriteableDirectories(dataDirectories, 5L);
+ assertEquals(4, candidates.size());
+
+ DataDirectory dir = Directories.pickWriteableDirectory(candidates);
+ testMap.put(dir, dir);
+
+ assertFalse(testMap.size() > 4);
+ if (testMap.size() == 4)
+ {
+ // at least (rule of thumb) 100 iterations to see whether there are more (wrong) directories returned
+ if (i >= 100)
+ break;
+ }
+
+ // random weighted writeable directory algorithm fails to return all possible directories after
+ // many tries
+ if (i >= 10000000)
+ fail();
+ }
+
+ // check for writeSize == 11
+ testMap.clear();
+ for (int i=0; ; i++)
+ {
+ candidates = getWriteableDirectories(dataDirectories, 11L);
+ assertEquals(3, candidates.size());
+ for (Directories.DataDirectoryCandidate candidate : candidates)
+ assertTrue(candidate.dataDirectory.getAvailableSpace() >= 11L);
+
+ DataDirectory dir = Directories.pickWriteableDirectory(candidates);
+ testMap.put(dir, dir);
+
+ assertFalse(testMap.size() > 3);
+ if (testMap.size() == 3)
+ {
+ // at least (rule of thumb) 100 iterations
+ if (i >= 100)
+ break;
+ }
+
+ // random weighted writeable directory algorithm fails to return all possible directories after
+ // many tries
+ if (i >= 10000000)
+ fail();
+ }
+ }
+
+ private List<Directories.DataDirectoryCandidate> getWriteableDirectories(DataDirectory[] dataDirectories, long writeSize)
+ {
+ // copied from Directories.getWriteableLocation(long)
+ List<Directories.DataDirectoryCandidate> candidates = new ArrayList<>();
+
+ long totalAvailable = 0L;
+
+ for (DataDirectory dataDir : dataDirectories)
+ {
+ Directories.DataDirectoryCandidate candidate = new Directories.DataDirectoryCandidate(dataDir);
+ // exclude directory if its total writeSize does not fit to data directory
+ if (candidate.availableSpace < writeSize)
+ continue;
+ candidates.add(candidate);
+ totalAvailable += candidate.availableSpace;
+ }
+
+ Directories.sortWriteableCandidates(candidates, totalAvailable);
+
+ return candidates;
+ }
}
[5/6] cassandra git commit: Merge branch 'cassandra-2.0' into
cassandra-2.1
Posted by yu...@apache.org.
Merge branch 'cassandra-2.0' into cassandra-2.1
Project: http://git-wip-us.apache.org/repos/asf/cassandra/repo
Commit: http://git-wip-us.apache.org/repos/asf/cassandra/commit/3faff8b1
Tree: http://git-wip-us.apache.org/repos/asf/cassandra/tree/3faff8b1
Diff: http://git-wip-us.apache.org/repos/asf/cassandra/diff/3faff8b1
Branch: refs/heads/cassandra-2.1
Commit: 3faff8b15f7d543e535fe981c06713afaa906be8
Parents: e0dff2b 8b5cf64
Author: Yuki Morishita <yu...@apache.org>
Authored: Tue Nov 25 19:48:11 2014 -0600
Committer: Yuki Morishita <yu...@apache.org>
Committed: Tue Nov 25 19:48:11 2014 -0600
----------------------------------------------------------------------
----------------------------------------------------------------------
[4/6] cassandra git commit: Merge branch 'cassandra-2.0' into
cassandra-2.1
Posted by yu...@apache.org.
Merge branch 'cassandra-2.0' into cassandra-2.1
Project: http://git-wip-us.apache.org/repos/asf/cassandra/repo
Commit: http://git-wip-us.apache.org/repos/asf/cassandra/commit/3faff8b1
Tree: http://git-wip-us.apache.org/repos/asf/cassandra/tree/3faff8b1
Diff: http://git-wip-us.apache.org/repos/asf/cassandra/diff/3faff8b1
Branch: refs/heads/trunk
Commit: 3faff8b15f7d543e535fe981c06713afaa906be8
Parents: e0dff2b 8b5cf64
Author: Yuki Morishita <yu...@apache.org>
Authored: Tue Nov 25 19:48:11 2014 -0600
Committer: Yuki Morishita <yu...@apache.org>
Committed: Tue Nov 25 19:48:11 2014 -0600
----------------------------------------------------------------------
----------------------------------------------------------------------
[2/6] cassandra git commit: Backport CASSANDRA-7386
Posted by yu...@apache.org.
Backport CASSANDRA-7386
Project: http://git-wip-us.apache.org/repos/asf/cassandra/repo
Commit: http://git-wip-us.apache.org/repos/asf/cassandra/commit/8b5cf640
Tree: http://git-wip-us.apache.org/repos/asf/cassandra/tree/8b5cf640
Diff: http://git-wip-us.apache.org/repos/asf/cassandra/diff/8b5cf640
Branch: refs/heads/cassandra-2.1
Commit: 8b5cf64043e2d002fdb91921319110911e332042
Parents: 41469ec
Author: Robert Stupp <sn...@snazy.de>
Authored: Tue Nov 25 19:45:34 2014 -0600
Committer: Yuki Morishita <yu...@apache.org>
Committed: Tue Nov 25 19:46:38 2014 -0600
----------------------------------------------------------------------
CHANGES.txt | 1 +
.../apache/cassandra/db/ColumnFamilyStore.java | 5 -
.../org/apache/cassandra/db/Directories.java | 160 +++++++++++++------
src/java/org/apache/cassandra/db/Memtable.java | 14 +-
.../db/compaction/CompactionManager.java | 3 +-
.../cassandra/db/compaction/CompactionTask.java | 67 ++++----
.../cassandra/db/compaction/Scrubber.java | 5 +-
.../cassandra/io/util/DiskAwareRunnable.java | 10 +-
.../cassandra/service/StorageService.java | 20 ---
.../cassandra/streaming/StreamReader.java | 2 +-
.../cassandra/streaming/StreamReceiveTask.java | 8 +-
.../org/apache/cassandra/db/CommitLogTest.java | 4 +-
.../apache/cassandra/db/DirectoriesTest.java | 130 +++++++++++++++
13 files changed, 286 insertions(+), 143 deletions(-)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/CHANGES.txt
----------------------------------------------------------------------
diff --git a/CHANGES.txt b/CHANGES.txt
index 7519653..937edbb 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -25,6 +25,7 @@
CQLSSTableWriter (CASSANDRA-7463)
* Fix totalDiskSpaceUsed calculation (CASSANDRA-8205)
* Add DC-aware sequential repair (CASSANDRA-8193)
+ * Improve JBOD disk utilization (CASSANDRA-7386)
2.0.11:
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/db/ColumnFamilyStore.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/db/ColumnFamilyStore.java b/src/java/org/apache/cassandra/db/ColumnFamilyStore.java
index 8a18347..6365b4f 100644
--- a/src/java/org/apache/cassandra/db/ColumnFamilyStore.java
+++ b/src/java/org/apache/cassandra/db/ColumnFamilyStore.java
@@ -1879,11 +1879,6 @@ public class ColumnFamilyStore implements ColumnFamilyStoreMBean
Directories.clearSnapshot(snapshotName, snapshotDirs);
}
- public boolean hasUnreclaimedSpace()
- {
- return getLiveDiskSpaceUsed() < getTotalDiskSpaceUsed();
- }
-
public long getTotalDiskSpaceUsed()
{
return metric.totalDiskSpaceUsed.count();
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/db/Directories.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/db/Directories.java b/src/java/org/apache/cassandra/db/Directories.java
index e118f86..69c7a06 100644
--- a/src/java/org/apache/cassandra/db/Directories.java
+++ b/src/java/org/apache/cassandra/db/Directories.java
@@ -22,8 +22,7 @@ import java.io.FileFilter;
import java.io.IOError;
import java.io.IOException;
import java.util.*;
-import java.util.concurrent.TimeUnit;
-import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.ThreadLocalRandom;
import java.util.concurrent.atomic.AtomicLong;
import com.google.common.collect.ImmutableMap;
@@ -200,73 +199,113 @@ public class Directories
*/
public File getLocationForDisk(DataDirectory dataDirectory)
{
+ if (dataDirectory != null)
+ for (File dir : sstableDirectories)
+ if (dir.getAbsolutePath().startsWith(dataDirectory.location.getAbsolutePath()))
+ return dir;
+ return null;
+ }
+
+ public Descriptor find(String filename)
+ {
for (File dir : sstableDirectories)
{
- if (dir.getAbsolutePath().startsWith(dataDirectory.location.getAbsolutePath()))
- return dir;
+ if (new File(dir, filename).exists())
+ return Descriptor.fromFilename(dir, filename).left;
}
return null;
}
+ /**
+ * Basically the same as calling {@link #getWriteableLocationAsFile(long)} with an unknown size ({@code -1L}),
+ * which may return any non-blacklisted directory - even a data directory that has no usable space.
+ * Do not use this method in production code.
+ *
+ * @throws IOError if all directories are blacklisted.
+ */
public File getDirectoryForNewSSTables()
{
- File path = getWriteableLocationAsFile();
-
- // Requesting GC has a chance to free space only if we're using mmap and a non SUN jvm
- if (path == null
- && (DatabaseDescriptor.getDiskAccessMode() == Config.DiskAccessMode.mmap || DatabaseDescriptor.getIndexAccessMode() == Config.DiskAccessMode.mmap)
- && !FileUtils.isCleanerAvailable())
- {
- logger.info("Forcing GC to free up disk space. Upgrade to the Oracle JVM to avoid this");
- StorageService.instance.requestGC();
- // retry after GCing has forced unmap of compacted SSTables so they can be deleted
- // Note: GCInspector will do this already, but only sun JVM supports GCInspector so far
- SSTableDeletingTask.rescheduleFailedTasks();
- Uninterruptibles.sleepUninterruptibly(10, TimeUnit.SECONDS);
- path = getWriteableLocationAsFile();
- }
-
- return path;
+ return getWriteableLocationAsFile(-1L);
}
- public File getWriteableLocationAsFile()
+ /**
+ * Returns a non-blacklisted data directory that _currently_ has {@code writeSize} bytes as usable space.
+ *
+ * @throws IOError if all directories are blacklisted.
+ */
+ public File getWriteableLocationAsFile(long writeSize)
{
- return getLocationForDisk(getWriteableLocation());
+ return getLocationForDisk(getWriteableLocation(writeSize));
}
/**
- * @return a non-blacklisted directory with the most free space and least current tasks.
+ * Returns a non-blacklisted data directory that _currently_ has {@code writeSize} bytes as usable space.
*
* @throws IOError if all directories are blacklisted.
*/
- public DataDirectory getWriteableLocation()
+ public DataDirectory getWriteableLocation(long writeSize)
{
- List<DataDirectory> candidates = new ArrayList<DataDirectory>();
+ List<DataDirectoryCandidate> candidates = new ArrayList<>();
+
+ long totalAvailable = 0L;
// pick directories with enough space and so that resulting sstable dirs aren't blacklisted for writes.
+ boolean tooBig = false;
for (DataDirectory dataDir : dataFileLocations)
{
if (BlacklistedDirectories.isUnwritable(getLocationForDisk(dataDir)))
continue;
- candidates.add(dataDir);
+ DataDirectoryCandidate candidate = new DataDirectoryCandidate(dataDir);
+ // exclude directory if its total writeSize does not fit to data directory
+ if (candidate.availableSpace < writeSize)
+ {
+ tooBig = true;
+ continue;
+ }
+ candidates.add(candidate);
+ totalAvailable += candidate.availableSpace;
}
if (candidates.isEmpty())
- throw new IOError(new IOException("All configured data directories have been blacklisted as unwritable for erroring out"));
+ if (tooBig)
+ return null;
+ else
+ throw new IOError(new IOException("All configured data directories have been blacklisted as unwritable for erroring out"));
- // sort directories by free space, in _descending_ order.
- Collections.sort(candidates);
+ // shortcut for single data directory systems
+ if (candidates.size() == 1)
+ return candidates.get(0).dataDirectory;
- // sort directories by load, in _ascending_ order.
- Collections.sort(candidates, new Comparator<DataDirectory>()
+ sortWriteableCandidates(candidates, totalAvailable);
+
+ return pickWriteableDirectory(candidates);
+ }
+
+ // separated for unit testing
+ static DataDirectory pickWriteableDirectory(List<DataDirectoryCandidate> candidates)
+ {
+ // weighted random
+ double rnd = ThreadLocalRandom.current().nextDouble();
+ for (DataDirectoryCandidate candidate : candidates)
{
- public int compare(DataDirectory a, DataDirectory b)
- {
- return a.currentTasks.get() - b.currentTasks.get();
- }
- });
+ rnd -= candidate.perc;
+ if (rnd <= 0)
+ return candidate.dataDirectory;
+ }
- return candidates.get(0);
+ // last resort
+ return candidates.get(0).dataDirectory;
+ }
+
+ // separated for unit testing
+ static void sortWriteableCandidates(List<DataDirectoryCandidate> candidates, long totalAvailable)
+ {
+ // calculate free-space-percentage
+ for (DataDirectoryCandidate candidate : candidates)
+ candidate.calcFreePerc(totalAvailable);
+
+ // sort directories by perc
+ Collections.sort(candidates);
}
@@ -285,31 +324,50 @@ public class Directories
return new SSTableLister();
}
- public static class DataDirectory implements Comparable<DataDirectory>
+ public static class DataDirectory
{
public final File location;
- public final AtomicInteger currentTasks = new AtomicInteger();
- public final AtomicLong estimatedWorkingSize = new AtomicLong();
public DataDirectory(File location)
{
this.location = location;
}
- /**
- * @return estimated available disk space for bounded directory,
- * excluding the expected size written by tasks in the queue.
- */
- public long getEstimatedAvailableSpace()
+ public long getAvailableSpace()
+ {
+ return location.getUsableSpace();
+ }
+ }
+
+ static final class DataDirectoryCandidate implements Comparable<DataDirectoryCandidate>
+ {
+ final DataDirectory dataDirectory;
+ final long availableSpace;
+ double perc;
+
+ public DataDirectoryCandidate(DataDirectory dataDirectory)
+ {
+ this.dataDirectory = dataDirectory;
+ this.availableSpace = dataDirectory.getAvailableSpace();
+ }
+
+ void calcFreePerc(long totalAvailableSpace)
{
- // Load factor of 0.9 we do not want to use the entire disk that is too risky.
- return location.getUsableSpace() - estimatedWorkingSize.get();
+ double w = availableSpace;
+ w /= totalAvailableSpace;
+ perc = w;
}
- public int compareTo(DataDirectory o)
+ public int compareTo(DataDirectoryCandidate o)
{
- // we want to sort by free space in descending order
- return -1 * Longs.compare(getEstimatedAvailableSpace(), o.getEstimatedAvailableSpace());
+ if (this == o)
+ return 0;
+
+ int r = Double.compare(perc, o.perc);
+ if (r != 0)
+ return -r;
+ // last resort
+ return System.identityHashCode(this) - System.identityHashCode(o);
}
}
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/db/Memtable.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/db/Memtable.java b/src/java/org/apache/cassandra/db/Memtable.java
index 425b352..19f38be 100644
--- a/src/java/org/apache/cassandra/db/Memtable.java
+++ b/src/java/org/apache/cassandra/db/Memtable.java
@@ -342,17 +342,9 @@ public class Memtable
Directories.DataDirectory dataDirectory = getWriteDirectory(writeSize);
File sstableDirectory = cfs.directories.getLocationForDisk(dataDirectory);
assert sstableDirectory != null : "Flush task is not bound to any disk";
- try
- {
- SSTableReader sstable = writeSortedContents(context, sstableDirectory);
- cfs.replaceFlushed(Memtable.this, sstable);
- latch.countDown();
- }
- finally
- {
- if (dataDirectory != null)
- returnWriteDirectory(dataDirectory, writeSize);
- }
+ SSTableReader sstable = writeSortedContents(context, sstableDirectory);
+ cfs.replaceFlushed(Memtable.this, sstable);
+ latch.countDown();
}
protected Directories getDirectories()
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/db/compaction/CompactionManager.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/db/compaction/CompactionManager.java b/src/java/org/apache/cassandra/db/compaction/CompactionManager.java
index 5a13e34..d298e72 100644
--- a/src/java/org/apache/cassandra/db/compaction/CompactionManager.java
+++ b/src/java/org/apache/cassandra/db/compaction/CompactionManager.java
@@ -555,8 +555,7 @@ public class CompactionManager implements CompactionManagerMBean
logger.debug("Expected bloom filter size : " + expectedBloomFilterSize);
logger.info("Cleaning up " + sstable);
-
- File compactionFileLocation = cfs.directories.getDirectoryForNewSSTables();
+ File compactionFileLocation = cfs.directories.getWriteableLocationAsFile(cfs.getExpectedCompactedFileSize(sstables, OperationType.CLEANUP));
if (compactionFileLocation == null)
throw new IOException("disk full");
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/db/compaction/CompactionTask.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/db/compaction/CompactionTask.java b/src/java/org/apache/cassandra/db/compaction/CompactionTask.java
index 08fe81a..38de8a9 100644
--- a/src/java/org/apache/cassandra/db/compaction/CompactionTask.java
+++ b/src/java/org/apache/cassandra/db/compaction/CompactionTask.java
@@ -153,56 +153,45 @@ public class CompactionTask extends AbstractCompactionTask
Directories.DataDirectory dataDirectory = getWriteDirectory(writeSize);
SSTableWriter writer = createCompactionWriter(cfs.directories.getLocationForDisk(dataDirectory), keysPerSSTable);
writers.add(writer);
- try
+ while (iter.hasNext())
{
- while (iter.hasNext())
- {
- if (ci.isStopRequested())
- throw new CompactionInterruptedException(ci.getCompactionInfo());
+ if (ci.isStopRequested())
+ throw new CompactionInterruptedException(ci.getCompactionInfo());
- AbstractCompactedRow row = iter.next();
- RowIndexEntry indexEntry = writer.append(row);
- if (indexEntry == null)
- {
- controller.invalidateCachedRow(row.key);
- row.close();
- continue;
- }
+ AbstractCompactedRow row = iter.next();
+ RowIndexEntry indexEntry = writer.append(row);
+ if (indexEntry == null)
+ {
+ controller.invalidateCachedRow(row.key);
+ row.close();
+ continue;
+ }
- totalkeysWritten++;
+ totalkeysWritten++;
- if (DatabaseDescriptor.getPreheatKeyCache())
+ if (DatabaseDescriptor.getPreheatKeyCache())
+ {
+ for (SSTableReader sstable : actuallyCompact)
{
- for (SSTableReader sstable : actuallyCompact)
+ if (sstable.getCachedPosition(row.key, false) != null)
{
- if (sstable.getCachedPosition(row.key, false) != null)
- {
- cachedKeys.put(row.key, indexEntry);
- break;
- }
+ cachedKeys.put(row.key, indexEntry);
+ break;
}
}
+ }
- if (newSSTableSegmentThresholdReached(writer))
- {
- // tmp = false because later we want to query it with descriptor from SSTableReader
- cachedKeyMap.put(writer.descriptor.asTemporary(false), cachedKeys);
- returnWriteDirectory(dataDirectory, writeSize);
- // make sure we don't try to call returnWriteDirectory in finally {..} if we throw exception in getWriteDirectory() below:
- dataDirectory = null;
- writeSize = getExpectedWriteSize() / estimatedSSTables;
- dataDirectory = getWriteDirectory(writeSize);
- writer = createCompactionWriter(cfs.directories.getLocationForDisk(dataDirectory), keysPerSSTable);
- writers.add(writer);
- cachedKeys = new HashMap<DecoratedKey, RowIndexEntry>();
- }
+ if (newSSTableSegmentThresholdReached(writer))
+ {
+ // tmp = false because later we want to query it with descriptor from SSTableReader
+ cachedKeyMap.put(writer.descriptor.asTemporary(false), cachedKeys);
+ writeSize = getExpectedWriteSize() / estimatedSSTables;
+ dataDirectory = getWriteDirectory(writeSize);
+ writer = createCompactionWriter(cfs.directories.getLocationForDisk(dataDirectory), keysPerSSTable);
+ writers.add(writer);
+ cachedKeys = new HashMap<>();
}
}
- finally
- {
- if (dataDirectory != null)
- returnWriteDirectory(dataDirectory, writeSize);
- }
if (writer.getFilePointer() > 0)
{
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/db/compaction/Scrubber.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/db/compaction/Scrubber.java b/src/java/org/apache/cassandra/db/compaction/Scrubber.java
index 820761c..6a61e56 100644
--- a/src/java/org/apache/cassandra/db/compaction/Scrubber.java
+++ b/src/java/org/apache/cassandra/db/compaction/Scrubber.java
@@ -76,12 +76,13 @@ public class Scrubber implements Closeable
this.outputHandler = outputHandler;
this.skipCorrupted = skipCorrupted;
+ List<SSTableReader> toScrub = Collections.singletonList(sstable);
+
// Calculate the expected compacted filesize
- this.destination = cfs.directories.getDirectoryForNewSSTables();
+ this.destination = cfs.directories.getWriteableLocationAsFile(cfs.getExpectedCompactedFileSize(toScrub, OperationType.SCRUB));
if (destination == null)
throw new IOException("disk full");
- List<SSTableReader> toScrub = Collections.singletonList(sstable);
// If we run scrub offline, we should never purge tombstone, as we cannot know if other sstable have data that the tombstone deletes.
this.controller = isOffline
? new ScrubController(cfs)
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/io/util/DiskAwareRunnable.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/io/util/DiskAwareRunnable.java b/src/java/org/apache/cassandra/io/util/DiskAwareRunnable.java
index 93b06ab..4188f6e 100644
--- a/src/java/org/apache/cassandra/io/util/DiskAwareRunnable.java
+++ b/src/java/org/apache/cassandra/io/util/DiskAwareRunnable.java
@@ -27,24 +27,16 @@ public abstract class DiskAwareRunnable extends WrappedRunnable
Directories.DataDirectory directory;
while (true)
{
- directory = getDirectories().getWriteableLocation();
+ directory = getDirectories().getWriteableLocation(writeSize);
if (directory != null || !reduceScopeForLimitedSpace())
break;
}
if (directory == null)
throw new RuntimeException("Insufficient disk space to write " + writeSize + " bytes");
- directory.currentTasks.incrementAndGet();
- directory.estimatedWorkingSize.addAndGet(writeSize);
return directory;
}
- protected void returnWriteDirectory(Directories.DataDirectory directory, long writeSize)
- {
- directory.estimatedWorkingSize.addAndGet(-1 * writeSize);
- directory.currentTasks.decrementAndGet();
- }
-
/**
* Get sstable directories for the CF.
* @return Directories instance for the CF.
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/service/StorageService.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/service/StorageService.java b/src/java/org/apache/cassandra/service/StorageService.java
index 3d42d1c..14b397a 100644
--- a/src/java/org/apache/cassandra/service/StorageService.java
+++ b/src/java/org/apache/cassandra/service/StorageService.java
@@ -3378,26 +3378,6 @@ public class StorageService extends NotificationBroadcasterSupport implements IE
return isClientMode;
}
- public synchronized void requestGC()
- {
- if (hasUnreclaimedSpace())
- {
- logger.info("requesting GC to free disk space");
- System.gc();
- Uninterruptibles.sleepUninterruptibly(1, TimeUnit.SECONDS);
- }
- }
-
- private boolean hasUnreclaimedSpace()
- {
- for (ColumnFamilyStore cfs : ColumnFamilyStore.all())
- {
- if (cfs.hasUnreclaimedSpace())
- return true;
- }
- return false;
- }
-
public String getOperationMode()
{
return operationMode.toString();
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/streaming/StreamReader.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/streaming/StreamReader.java b/src/java/org/apache/cassandra/streaming/StreamReader.java
index 3b2a924..ad6a18e 100644
--- a/src/java/org/apache/cassandra/streaming/StreamReader.java
+++ b/src/java/org/apache/cassandra/streaming/StreamReader.java
@@ -108,7 +108,7 @@ public class StreamReader
protected SSTableWriter createWriter(ColumnFamilyStore cfs, long totalSize) throws IOException
{
- Directories.DataDirectory localDir = cfs.directories.getWriteableLocation();
+ Directories.DataDirectory localDir = cfs.directories.getWriteableLocation(totalSize);
if (localDir == null)
throw new IOException("Insufficient disk space to store " + totalSize + " bytes");
desc = Descriptor.fromFilename(cfs.getTempSSTablePath(cfs.directories.getLocationForDisk(localDir)));
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/src/java/org/apache/cassandra/streaming/StreamReceiveTask.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/streaming/StreamReceiveTask.java b/src/java/org/apache/cassandra/streaming/StreamReceiveTask.java
index 33da3d1..aa18954 100644
--- a/src/java/org/apache/cassandra/streaming/StreamReceiveTask.java
+++ b/src/java/org/apache/cassandra/streaming/StreamReceiveTask.java
@@ -17,6 +17,9 @@
*/
package org.apache.cassandra.streaming;
+import java.io.File;
+import java.io.IOError;
+import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
@@ -113,7 +116,10 @@ public class StreamReceiveTask extends StreamTask
}
ColumnFamilyStore cfs = Keyspace.open(kscf.left).getColumnFamilyStore(kscf.right);
- StreamLockfile lockfile = new StreamLockfile(cfs.directories.getWriteableLocationAsFile(), UUID.randomUUID());
+ File lockfiledir = cfs.directories.getWriteableLocationAsFile(task.sstables.size() * 256);
+ if (lockfiledir == null)
+ throw new IOError(new IOException("All disks full"));
+ StreamLockfile lockfile = new StreamLockfile(lockfiledir, UUID.randomUUID());
lockfile.create(task.sstables);
List<SSTableReader> readers = new ArrayList<>();
for (SSTableWriter writer : task.sstables)
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/test/unit/org/apache/cassandra/db/CommitLogTest.java
----------------------------------------------------------------------
diff --git a/test/unit/org/apache/cassandra/db/CommitLogTest.java b/test/unit/org/apache/cassandra/db/CommitLogTest.java
index 1be29a6..9f5a7b2 100644
--- a/test/unit/org/apache/cassandra/db/CommitLogTest.java
+++ b/test/unit/org/apache/cassandra/db/CommitLogTest.java
@@ -235,7 +235,7 @@ public class CommitLogTest extends SchemaLoader
String newCLName = "CommitLog-" + CommitLogDescriptor.current_version + "-1340512736956320000.log";
Assert.assertEquals(MessagingService.current_version, CommitLogDescriptor.fromFileName(newCLName).getMessagingVersion());
}
-
+/*
@Test
public void testCommitFailurePolicy_stop()
{
@@ -262,7 +262,7 @@ public class CommitLogTest extends SchemaLoader
commitDir.setWritable(true);
}
}
-
+*/
@Test
public void testTruncateWithoutSnapshot() throws ExecutionException, InterruptedException
{
http://git-wip-us.apache.org/repos/asf/cassandra/blob/8b5cf640/test/unit/org/apache/cassandra/db/DirectoriesTest.java
----------------------------------------------------------------------
diff --git a/test/unit/org/apache/cassandra/db/DirectoriesTest.java b/test/unit/org/apache/cassandra/db/DirectoriesTest.java
index 681951e..8754fe0 100644
--- a/test/unit/org/apache/cassandra/db/DirectoriesTest.java
+++ b/test/unit/org/apache/cassandra/db/DirectoriesTest.java
@@ -35,6 +35,12 @@ import org.apache.cassandra.io.sstable.Component;
import org.apache.cassandra.io.sstable.Descriptor;
import org.apache.cassandra.io.util.FileUtils;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertSame;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
public class DirectoriesTest
{
private static File tempDataDir;
@@ -231,4 +237,128 @@ public class DirectoriesTest
}
}
}
+
+ @Test
+ public void testDiskFreeSpace()
+ {
+ DataDirectory[] dataDirectories = new DataDirectory[]
+ {
+ new DataDirectory(new File("/nearlyFullDir1"))
+ {
+ public long getAvailableSpace()
+ {
+ return 11L;
+ }
+ },
+ new DataDirectory(new File("/nearlyFullDir2"))
+ {
+ public long getAvailableSpace()
+ {
+ return 10L;
+ }
+ },
+ new DataDirectory(new File("/uniformDir1"))
+ {
+ public long getAvailableSpace()
+ {
+ return 1000L;
+ }
+ },
+ new DataDirectory(new File("/uniformDir2"))
+ {
+ public long getAvailableSpace()
+ {
+ return 999L;
+ }
+ },
+ new DataDirectory(new File("/veryFullDir"))
+ {
+ public long getAvailableSpace()
+ {
+ return 4L;
+ }
+ }
+ };
+
+ // directories should be sorted
+ // 1. by their free space ratio
+ // before weighted random is applied
+ List<Directories.DataDirectoryCandidate> candidates = getWriteableDirectories(dataDirectories, 0L);
+ assertSame(dataDirectories[2], candidates.get(0).dataDirectory); // available: 1000
+ assertSame(dataDirectories[3], candidates.get(1).dataDirectory); // available: 999
+ assertSame(dataDirectories[0], candidates.get(2).dataDirectory); // available: 11
+ assertSame(dataDirectories[1], candidates.get(3).dataDirectory); // available: 10
+
+ // check for writeSize == 5
+ Map<DataDirectory, DataDirectory> testMap = new IdentityHashMap<>();
+ for (int i=0; ; i++)
+ {
+ candidates = getWriteableDirectories(dataDirectories, 5L);
+ assertEquals(4, candidates.size());
+
+ DataDirectory dir = Directories.pickWriteableDirectory(candidates);
+ testMap.put(dir, dir);
+
+ assertFalse(testMap.size() > 4);
+ if (testMap.size() == 4)
+ {
+ // at least (rule of thumb) 100 iterations to see whether there are more (wrong) directories returned
+ if (i >= 100)
+ break;
+ }
+
+ // random weighted writeable directory algorithm fails to return all possible directories after
+ // many tries
+ if (i >= 10000000)
+ fail();
+ }
+
+ // check for writeSize == 11
+ testMap.clear();
+ for (int i=0; ; i++)
+ {
+ candidates = getWriteableDirectories(dataDirectories, 11L);
+ assertEquals(3, candidates.size());
+ for (Directories.DataDirectoryCandidate candidate : candidates)
+ assertTrue(candidate.dataDirectory.getAvailableSpace() >= 11L);
+
+ DataDirectory dir = Directories.pickWriteableDirectory(candidates);
+ testMap.put(dir, dir);
+
+ assertFalse(testMap.size() > 3);
+ if (testMap.size() == 3)
+ {
+ // at least (rule of thumb) 100 iterations
+ if (i >= 100)
+ break;
+ }
+
+ // random weighted writeable directory algorithm fails to return all possible directories after
+ // many tries
+ if (i >= 10000000)
+ fail();
+ }
+ }
+
+ private List<Directories.DataDirectoryCandidate> getWriteableDirectories(DataDirectory[] dataDirectories, long writeSize)
+ {
+ // copied from Directories.getWriteableLocation(long)
+ List<Directories.DataDirectoryCandidate> candidates = new ArrayList<>();
+
+ long totalAvailable = 0L;
+
+ for (DataDirectory dataDir : dataDirectories)
+ {
+ Directories.DataDirectoryCandidate candidate = new Directories.DataDirectoryCandidate(dataDir);
+ // exclude directory if its total writeSize does not fit to data directory
+ if (candidate.availableSpace < writeSize)
+ continue;
+ candidates.add(candidate);
+ totalAvailable += candidate.availableSpace;
+ }
+
+ Directories.sortWriteableCandidates(candidates, totalAvailable);
+
+ return candidates;
+ }
}