You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@cassandra.apache.org by sl...@apache.org on 2016/09/21 14:29:17 UTC

[1/4] cassandra git commit: If CF has no clustering columns, any row cache is full partition cache (CASSANDRA-12499)

Repository: cassandra
Updated Branches:
  refs/heads/cassandra-3.0 ec6048758 -> ead27d9e6
  refs/heads/trunk eace9aadd -> 5f0a77b6d


If CF has no clustering columns, any row cache is full partition cache (CASSANDRA-12499)

Patch by Jeff Jirsa ; Reviewed by Sylvain Lebresne for CASSANDRA-12499


Project: http://git-wip-us.apache.org/repos/asf/cassandra/repo
Commit: http://git-wip-us.apache.org/repos/asf/cassandra/commit/ec604875
Tree: http://git-wip-us.apache.org/repos/asf/cassandra/tree/ec604875
Diff: http://git-wip-us.apache.org/repos/asf/cassandra/diff/ec604875

Branch: refs/heads/trunk
Commit: ec604875886a5790b627f0fa22cea4fca34532dd
Parents: 517b652
Author: Jeff Jirsa <je...@crowdstrike.com>
Authored: Tue Sep 20 17:16:33 2016 -0700
Committer: Jeff Jirsa <je...@crowdstrike.com>
Committed: Tue Sep 20 17:21:38 2016 -0700

----------------------------------------------------------------------
 CHANGES.txt                                     |  1 +
 .../db/SinglePartitionReadCommand.java          |  6 +-
 .../unit/org/apache/cassandra/SchemaLoader.java | 21 ++++--
 .../org/apache/cassandra/db/RowCacheTest.java   | 72 ++++++++++++++++++++
 4 files changed, 93 insertions(+), 7 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/cassandra/blob/ec604875/CHANGES.txt
----------------------------------------------------------------------
diff --git a/CHANGES.txt b/CHANGES.txt
index 791f99c..da56e00 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,6 +1,7 @@
 3.0.10
  * Extend ColumnIdentifier.internedInstances key to include the type that generated the byte buffer (CASSANDRA-12516)
  * Backport CASSANDRA-10756 (race condition in NativeTransportService shutdown) (CASSANDRA-12472)
+ * If CF has no clustering columns, any row cache is full partition cache (CASSANDRA-12499)
 Merged from 2.1:
  * Add system property to set the max number of native transport requests in queue (CASSANDRA-11363)
 

http://git-wip-us.apache.org/repos/asf/cassandra/blob/ec604875/src/java/org/apache/cassandra/db/SinglePartitionReadCommand.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/db/SinglePartitionReadCommand.java b/src/java/org/apache/cassandra/db/SinglePartitionReadCommand.java
index 73eb9bd..886a918 100644
--- a/src/java/org/apache/cassandra/db/SinglePartitionReadCommand.java
+++ b/src/java/org/apache/cassandra/db/SinglePartitionReadCommand.java
@@ -407,7 +407,11 @@ public class SinglePartitionReadCommand extends ReadCommand
         cfs.metric.rowCacheMiss.inc();
         Tracing.trace("Row cache miss");
 
-        boolean cacheFullPartitions = metadata().params.caching.cacheAllRows();
+        // Note that on tables with no clustering keys, any positive value of
+        // rowsToCache implies caching the full partition
+        boolean cacheFullPartitions = metadata().clusteringColumns().size() > 0 ?
+                                      metadata().params.caching.cacheAllRows() :
+                                      metadata().params.caching.cacheRows();
 
         // To be able to cache what we read, what we read must at least covers what the cache holds, that
         // is the 'rowsToCache' first rows of the partition. We could read those 'rowsToCache' first rows

http://git-wip-us.apache.org/repos/asf/cassandra/blob/ec604875/test/unit/org/apache/cassandra/SchemaLoader.java
----------------------------------------------------------------------
diff --git a/test/unit/org/apache/cassandra/SchemaLoader.java b/test/unit/org/apache/cassandra/SchemaLoader.java
index dd4884c..87e8e1e 100644
--- a/test/unit/org/apache/cassandra/SchemaLoader.java
+++ b/test/unit/org/apache/cassandra/SchemaLoader.java
@@ -205,6 +205,7 @@ public class SchemaLoader
                 Tables.of(
                 standardCFMD(ks_rcs, "CFWithoutCache").caching(CachingParams.CACHE_NOTHING),
                 standardCFMD(ks_rcs, "CachedCF").caching(CachingParams.CACHE_EVERYTHING),
+                standardCFMD(ks_rcs, "CachedNoClustering", 1, IntegerType.instance, IntegerType.instance, null).caching(CachingParams.CACHE_EVERYTHING),
                 standardCFMD(ks_rcs, "CachedIntCF").
                         caching(new CachingParams(true, 100)))));
 
@@ -348,18 +349,22 @@ public class SchemaLoader
 
     public static CFMetaData standardCFMD(String ksName, String cfName, int columnCount, AbstractType<?> keyType, AbstractType<?> valType, AbstractType<?> clusteringType)
     {
-        CFMetaData.Builder builder = CFMetaData.Builder.create(ksName, cfName)
-                .addPartitionKey("key", keyType)
-                .addClusteringColumn("name", clusteringType)
-                .addRegularColumn("val", valType);
+        CFMetaData.Builder builder;
+        builder = CFMetaData.Builder.create(ksName, cfName)
+                                    .addPartitionKey("key", keyType)
+                                    .addRegularColumn("val", valType);
+
+        if(clusteringType != null)
+            builder = builder.addClusteringColumn("name", clusteringType);
 
         for (int i = 0; i < columnCount; i++)
             builder.addRegularColumn("val" + i, AsciiType.instance);
 
         return builder.build()
-               .compression(getCompressionParameters());
+                      .compression(getCompressionParameters());
     }
 
+
     public static CFMetaData denseCFMD(String ksName, String cfName)
     {
         return denseCFMD(ksName, cfName, AsciiType.instance);
@@ -524,11 +529,15 @@ public class SchemaLoader
         for (int i = offset; i < offset + numberOfRows; i++)
         {
             RowUpdateBuilder builder = new RowUpdateBuilder(cfm, FBUtilities.timestampMicros(), ByteBufferUtil.bytes("key"+i));
-            builder.clustering(ByteBufferUtil.bytes("col"+ i)).add("val", ByteBufferUtil.bytes("val" + i));
+            if (cfm.clusteringColumns() != null && !cfm.clusteringColumns().isEmpty())
+                builder.clustering(ByteBufferUtil.bytes("col"+ i)).add("val", ByteBufferUtil.bytes("val" + i));
+            else
+                builder.add("val", ByteBufferUtil.bytes("val"+i));
             builder.build().apply();
         }
     }
 
+
     public static void cleanupSavedCaches()
     {
         File cachesDir = new File(DatabaseDescriptor.getSavedCachesLocation());

http://git-wip-us.apache.org/repos/asf/cassandra/blob/ec604875/test/unit/org/apache/cassandra/db/RowCacheTest.java
----------------------------------------------------------------------
diff --git a/test/unit/org/apache/cassandra/db/RowCacheTest.java b/test/unit/org/apache/cassandra/db/RowCacheTest.java
index 267e5e4..cff574a 100644
--- a/test/unit/org/apache/cassandra/db/RowCacheTest.java
+++ b/test/unit/org/apache/cassandra/db/RowCacheTest.java
@@ -34,6 +34,7 @@ import org.apache.cassandra.Util;
 import org.apache.cassandra.cache.RowCacheKey;
 import org.apache.cassandra.config.CFMetaData;
 import org.apache.cassandra.config.Schema;
+import org.apache.cassandra.db.marshal.AsciiType;
 import org.apache.cassandra.db.rows.*;
 import org.apache.cassandra.db.compaction.CompactionManager;
 import org.apache.cassandra.db.filter.ColumnFilter;
@@ -58,6 +59,7 @@ public class RowCacheTest
     private static final String KEYSPACE_CACHED = "RowCacheTest";
     private static final String CF_CACHED = "CachedCF";
     private static final String CF_CACHEDINT = "CachedIntCF";
+    private static final String CF_CACHEDNOCLUSTER = "CachedNoClustering";
 
     @BeforeClass
     public static void defineSchema() throws ConfigurationException
@@ -65,6 +67,8 @@ public class RowCacheTest
         SchemaLoader.prepareServer();
         SchemaLoader.createKeyspace(KEYSPACE_CACHED,
                                     KeyspaceParams.simple(1),
+                                    SchemaLoader.standardCFMD(KEYSPACE_CACHED, CF_CACHEDNOCLUSTER, 1, AsciiType.instance, AsciiType.instance, null)
+                                                .caching(new CachingParams(true, 100)),
                                     SchemaLoader.standardCFMD(KEYSPACE_CACHED, CF_CACHED).caching(CachingParams.CACHE_EVERYTHING),
                                     SchemaLoader.standardCFMD(KEYSPACE_CACHED, CF_CACHEDINT, 1, IntegerType.instance)
                                                 .caching(new CachingParams(true, 100)));
@@ -206,6 +210,74 @@ public class RowCacheTest
     }
 
     @Test
+    public void testRowCacheNoClustering() throws Exception
+    {
+        CompactionManager.instance.disableAutoCompaction();
+
+        Keyspace keyspace = Keyspace.open(KEYSPACE_CACHED);
+        ColumnFamilyStore cachedStore  = keyspace.getColumnFamilyStore(CF_CACHEDNOCLUSTER);
+
+        // empty the row cache
+        CacheService.instance.invalidateRowCache();
+
+        // set global row cache size to 1 MB
+        CacheService.instance.setRowCacheCapacityInMB(1);
+
+        // inserting 100 rows into column family
+        SchemaLoader.insertData(KEYSPACE_CACHED, CF_CACHEDNOCLUSTER, 0, 100);
+
+        // now reading rows one by one and checking if row cache grows
+        for (int i = 0; i < 100; i++)
+        {
+            DecoratedKey key = Util.dk("key" + i);
+
+            Util.getAll(Util.cmd(cachedStore, key).build());
+
+            assertEquals(CacheService.instance.rowCache.size(), i + 1);
+            assert(cachedStore.containsCachedParition(key)); // current key should be stored in the cache
+        }
+
+        // insert 10 more keys
+        SchemaLoader.insertData(KEYSPACE_CACHED, CF_CACHEDNOCLUSTER, 100, 10);
+
+        for (int i = 100; i < 110; i++)
+        {
+            DecoratedKey key = Util.dk("key" + i);
+
+            Util.getAll(Util.cmd(cachedStore, key).build());
+            assert cachedStore.containsCachedParition(key); // cache should be populated with the latest rows read (old ones should be popped)
+
+            // checking if cell is read correctly after cache
+            CachedPartition cp = cachedStore.getRawCachedPartition(key);
+            try (UnfilteredRowIterator ai = cp.unfilteredIterator(ColumnFilter.selection(cp.columns()), Slices.ALL, false))
+            {
+                assert ai.hasNext();
+                Row r = (Row)ai.next();
+                assertFalse(ai.hasNext());
+
+                Iterator<Cell> ci = r.cells().iterator();
+                assert(ci.hasNext());
+                Cell cell = ci.next();
+
+                assert cell.column().name.bytes.equals(ByteBufferUtil.bytes("val"));
+                assert cell.value().equals(ByteBufferUtil.bytes("val" + i));
+            }
+        }
+
+        // clear 100 rows from the cache
+        int keysLeft = 109;
+        for (int i = 109; i >= 10; i--)
+        {
+            cachedStore.invalidateCachedPartition(Util.dk("key" + i));
+            assert CacheService.instance.rowCache.size() == keysLeft;
+            keysLeft--;
+        }
+
+        CacheService.instance.setRowCacheCapacityInMB(0);
+
+    }
+
+    @Test
     public void testRowCacheLoad() throws Exception
     {
         CacheService.instance.setRowCacheCapacityInMB(1);


[2/4] cassandra git commit: Establish consistent distinction between non-existing partition and NULL value for LWTs on static columns

Posted by sl...@apache.org.
Establish consistent distinction between non-existing partition and NULL value for LWTs on static columns

patch by Alex Petrov; reviewed by Sylvain Lebresne for CASSANDRA-12060


Project: http://git-wip-us.apache.org/repos/asf/cassandra/repo
Commit: http://git-wip-us.apache.org/repos/asf/cassandra/commit/ead27d9e
Tree: http://git-wip-us.apache.org/repos/asf/cassandra/tree/ead27d9e
Diff: http://git-wip-us.apache.org/repos/asf/cassandra/diff/ead27d9e

Branch: refs/heads/trunk
Commit: ead27d9e664726da7695fa11ea7e022c11ee7590
Parents: ec60487
Author: Alex Petrov <ol...@gmail.com>
Authored: Wed Aug 10 13:15:30 2016 +0200
Committer: Sylvain Lebresne <sy...@datastax.com>
Committed: Wed Sep 21 16:27:32 2016 +0200

----------------------------------------------------------------------
 CHANGES.txt                                     |   1 +
 .../cql3/statements/CQL3CasRequest.java         | 113 ++++++---
 .../operations/InsertUpdateIfConditionTest.java | 249 +++++++++++++------
 3 files changed, 254 insertions(+), 109 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/cassandra/blob/ead27d9e/CHANGES.txt
----------------------------------------------------------------------
diff --git a/CHANGES.txt b/CHANGES.txt
index da56e00..abffd80 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,4 +1,5 @@
 3.0.10
+ * Establish consistent distinction between non-existing partition and NULL value for LWTs on static columns (CASSANDRA-12060)
  * Extend ColumnIdentifier.internedInstances key to include the type that generated the byte buffer (CASSANDRA-12516)
  * Backport CASSANDRA-10756 (race condition in NativeTransportService shutdown) (CASSANDRA-12472)
  * If CF has no clustering columns, any row cache is full partition cache (CASSANDRA-12499)

http://git-wip-us.apache.org/repos/asf/cassandra/blob/ead27d9e/src/java/org/apache/cassandra/cql3/statements/CQL3CasRequest.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/cql3/statements/CQL3CasRequest.java b/src/java/org/apache/cassandra/cql3/statements/CQL3CasRequest.java
index 9564005..cf4110c 100644
--- a/src/java/org/apache/cassandra/cql3/statements/CQL3CasRequest.java
+++ b/src/java/org/apache/cassandra/cql3/statements/CQL3CasRequest.java
@@ -26,8 +26,8 @@ import com.google.common.collect.Multimap;
 import org.apache.cassandra.config.CFMetaData;
 import org.apache.cassandra.cql3.*;
 import org.apache.cassandra.db.*;
-import org.apache.cassandra.db.filter.ClusteringIndexSliceFilter;
-import org.apache.cassandra.db.filter.ColumnFilter;
+import org.apache.cassandra.db.filter.*;
+import org.apache.cassandra.db.rows.Row;
 import org.apache.cassandra.db.partitions.FilteredPartition;
 import org.apache.cassandra.db.partitions.Partition;
 import org.apache.cassandra.db.partitions.PartitionUpdate;
@@ -48,10 +48,13 @@ public class CQL3CasRequest implements CASRequest
     private final boolean updatesStaticRow;
     private boolean hasExists; // whether we have an exist or if not exist condition
 
+    // Conditions on the static row. We keep it separate from 'conditions' as most things related to the static row are
+    // special cases anyway.
+    private RowCondition staticConditions;
     // We index RowCondition by the clustering of the row they applied to for 2 reasons:
-    //   1) this allows to keep things sorted to build the ColumnSlice array below
+    //   1) this allows to keep things sorted to build the read command below
     //   2) this allows to detect when contradictory conditions are set (not exists with some other conditions on the same row)
-    private final SortedMap<Clustering, RowCondition> conditions;
+    private final TreeMap<Clustering, RowCondition> conditions;
 
     private final List<RowUpdate> updates = new ArrayList<>();
 
@@ -78,34 +81,37 @@ public class CQL3CasRequest implements CASRequest
 
     public void addNotExist(Clustering clustering) throws InvalidRequestException
     {
-        RowCondition previous = conditions.put(clustering, new NotExistCondition(clustering));
-        if (previous != null && !(previous instanceof NotExistCondition))
-        {
-            // these should be prevented by the parser, but it doesn't hurt to check
-            if (previous instanceof ExistCondition)
-                throw new InvalidRequestException("Cannot mix IF EXISTS and IF NOT EXISTS conditions for the same row");
-            else
-                throw new InvalidRequestException("Cannot mix IF conditions and IF NOT EXISTS for the same row");
-        }
-        hasExists = true;
+        addExistsCondition(clustering, new NotExistCondition(clustering), true);
     }
 
     public void addExist(Clustering clustering) throws InvalidRequestException
     {
-        RowCondition previous = conditions.put(clustering, new ExistCondition(clustering));
-        // this should be prevented by the parser, but it doesn't hurt to check
-        if (previous instanceof NotExistCondition)
-            throw new InvalidRequestException("Cannot mix IF EXISTS and IF NOT EXISTS conditions for the same row");
+        addExistsCondition(clustering, new ExistCondition(clustering), false);
+    }
+
+    private void addExistsCondition(Clustering clustering, RowCondition condition, boolean isNotExist)
+    {
+        assert condition instanceof ExistCondition || condition instanceof NotExistCondition;
+        RowCondition previous = getConditionsForRow(clustering);
+        if (previous != null && !(previous.getClass().equals(condition.getClass())))
+        {
+            // these should be prevented by the parser, but it doesn't hurt to check
+            throw (previous instanceof NotExistCondition || previous instanceof ExistCondition)
+                ? new InvalidRequestException("Cannot mix IF EXISTS and IF NOT EXISTS conditions for the same row")
+                : new InvalidRequestException("Cannot mix IF conditions and IF " + (isNotExist ? "NOT " : "") + "EXISTS for the same row");
+        }
+
+        setConditionsForRow(clustering, condition);
         hasExists = true;
     }
 
     public void addConditions(Clustering clustering, Collection<ColumnCondition> conds, QueryOptions options) throws InvalidRequestException
     {
-        RowCondition condition = conditions.get(clustering);
+        RowCondition condition = getConditionsForRow(clustering);
         if (condition == null)
         {
             condition = new ColumnsConditions(clustering);
-            conditions.put(clustering, condition);
+            setConditionsForRow(clustering, condition);
         }
         else if (!(condition instanceof ColumnsConditions))
         {
@@ -114,6 +120,25 @@ public class CQL3CasRequest implements CASRequest
         ((ColumnsConditions)condition).addConditions(conds, options);
     }
 
+    private RowCondition getConditionsForRow(Clustering clustering)
+    {
+        return clustering == Clustering.STATIC_CLUSTERING ? staticConditions : conditions.get(clustering);
+    }
+
+    private void setConditionsForRow(Clustering clustering, RowCondition condition)
+    {
+        if (clustering == Clustering.STATIC_CLUSTERING)
+        {
+            assert staticConditions == null;
+            staticConditions = condition;
+        }
+        else
+        {
+            RowCondition previous = conditions.put(clustering, condition);
+            assert previous == null;
+        }
+    }
+
     private PartitionColumns columnsToRead()
     {
         // If all our conditions are columns conditions (IF x = ?), then it's enough to query
@@ -135,23 +160,37 @@ public class CQL3CasRequest implements CASRequest
 
     public SinglePartitionReadCommand readCommand(int nowInSec)
     {
-        assert !conditions.isEmpty();
-        Slices.Builder builder = new Slices.Builder(cfm.comparator, conditions.size());
-        // We always read CQL rows entirely as on CAS failure we want to be able to distinguish between "row exists
-        // but all values for which there were conditions are null" and "row doesn't exists", and we can't rely on the
-        // row marker for that (see #6623)
-        for (Clustering clustering : conditions.keySet())
-        {
-            if (clustering != Clustering.STATIC_CLUSTERING)
-                builder.add(Slice.make(clustering));
-        }
-
-        ClusteringIndexSliceFilter filter = new ClusteringIndexSliceFilter(builder.build(), false);
+        assert staticConditions != null || !conditions.isEmpty();
+
+        // With only a static condition, we still want to make the distinction between a non-existing partition and one
+        // that exists (has some live data) but has not static content. So we query the first live row of the partition.
+        if (conditions.isEmpty())
+            return SinglePartitionReadCommand.create(cfm,
+                                                     nowInSec,
+                                                     ColumnFilter.selection(columnsToRead()),
+                                                     RowFilter.NONE,
+                                                     DataLimits.cqlLimits(1),
+                                                     key,
+                                                     new ClusteringIndexSliceFilter(Slices.ALL, false));
+
+        ClusteringIndexNamesFilter filter = new ClusteringIndexNamesFilter(conditions.navigableKeySet(), false);
         return SinglePartitionReadCommand.create(cfm, nowInSec, key, ColumnFilter.selection(columnsToRead()), filter);
     }
 
+    /**
+     * Checks whether the conditions represented by this object applies provided the current state of the partition on
+     * which those conditions are.
+     *
+     * @param current the partition with current data corresponding to these conditions. More precisely, this must be
+     * the result of executing the command returned by {@link #readCommand}. This can be empty but it should not be
+     * {@code null}.
+     * @return whether the conditions represented by this object applies or not.
+     */
     public boolean appliesTo(FilteredPartition current) throws InvalidRequestException
     {
+        if (staticConditions != null && !staticConditions.appliesTo(current))
+            return false;
+
         for (RowCondition condition : conditions.values())
         {
             if (!condition.appliesTo(current))
@@ -232,7 +271,7 @@ public class CQL3CasRequest implements CASRequest
 
         public boolean appliesTo(FilteredPartition current)
         {
-            return current == null || current.getRow(clustering) == null;
+            return current.getRow(clustering) == null;
         }
     }
 
@@ -245,7 +284,7 @@ public class CQL3CasRequest implements CASRequest
 
         public boolean appliesTo(FilteredPartition current)
         {
-            return current != null && current.getRow(clustering) != null;
+            return current.getRow(clustering) != null;
         }
     }
 
@@ -269,12 +308,10 @@ public class CQL3CasRequest implements CASRequest
 
         public boolean appliesTo(FilteredPartition current) throws InvalidRequestException
         {
-            if (current == null)
-                return conditions.isEmpty();
-
+            Row row = current.getRow(clustering);
             for (ColumnCondition.Bound condition : conditions.values())
             {
-                if (!condition.appliesTo(current.getRow(clustering)))
+                if (!condition.appliesTo(row))
                     return false;
             }
             return true;

http://git-wip-us.apache.org/repos/asf/cassandra/blob/ead27d9e/test/unit/org/apache/cassandra/cql3/validation/operations/InsertUpdateIfConditionTest.java
----------------------------------------------------------------------
diff --git a/test/unit/org/apache/cassandra/cql3/validation/operations/InsertUpdateIfConditionTest.java b/test/unit/org/apache/cassandra/cql3/validation/operations/InsertUpdateIfConditionTest.java
index a1ee4f8..352100e 100644
--- a/test/unit/org/apache/cassandra/cql3/validation/operations/InsertUpdateIfConditionTest.java
+++ b/test/unit/org/apache/cassandra/cql3/validation/operations/InsertUpdateIfConditionTest.java
@@ -111,7 +111,8 @@ public class InsertUpdateIfConditionTest extends CQLTester
         // Shouldn't apply
         assertRows(execute("UPDATE %s SET v1 = 3, v2 = 'bar' WHERE k = 0 IF EXISTS"), row(false));
 
-        // Should apply
+        // Shouldn't apply
+        assertEmpty(execute("SELECT * FROM %s WHERE k = 0"));
         assertRows(execute("DELETE FROM %s WHERE k = 0 IF v1 IN (null)"), row(true));
 
         createTable(" CREATE TABLE %s (k int, c int, v1 text, PRIMARY KEY(k, c))");
@@ -1038,14 +1039,20 @@ public class InsertUpdateIfConditionTest extends CQLTester
         assertRows(execute("SELECT * FROM %s WHERE a = 6"),
                    row(6, 6, 6, "a"));
 
+        execute("INSERT INTO %s (a, b, s, d) values (7, 7, 100, 'a')");
+        assertRows(execute("UPDATE %s SET s = 7 WHERE a = 7 IF s = 101"),
+                   row(false, 100));
+        assertRows(execute("SELECT * FROM %s WHERE a = 7"),
+                   row(7, 7, 100, "a"));
+
         // pre-existing row with null in the static column
         execute("INSERT INTO %s (a, b, d) values (7, 7, 'a')");
         assertRows(execute("UPDATE %s SET s = 7 WHERE a = 7 IF s = NULL"),
-                   row(true));
+                   row(false, 100));
         assertRows(execute("SELECT * FROM %s WHERE a = 7"),
-                   row(7, 7, 7, "a"));
+                   row(7, 7, 100, "a"));
 
-        // deleting row before CAS
+        // deleting row before CAS makes it effectively non-existing
         execute("DELETE FROM %s WHERE a = 8;");
         assertRows(execute("UPDATE %s SET s = 8 WHERE a = 8 IF s = NULL"),
                    row(true));
@@ -1054,70 +1061,151 @@ public class InsertUpdateIfConditionTest extends CQLTester
     }
 
     @Test
-    public void testConditionalUpdatesWithNullValues() throws Throwable
+    public void testConditionalUpdatesWithNonExistingValues() throws Throwable
     {
         createTable("CREATE TABLE %s (a int, b int, s int static, d text, PRIMARY KEY (a, b))");
 
-        // pre-populate, leave out static column
-        for (int i = 1; i <= 5; i++)
-            execute("INSERT INTO %s (a, b) VALUES (?, ?)", i, i);
+        assertRows(execute("UPDATE %s SET s = 1 WHERE a = 1 IF s = NULL"),
+                   row(true));
+        assertRows(execute("SELECT a, s, d FROM %s WHERE a = 1"),
+                   row(1, 1, null));
 
-        conditionalUpdatesWithNonExistingOrNullValues();
+        assertRows(execute("UPDATE %s SET s = 2 WHERE a = 2 IF s IN (10,20,NULL)"),
+                   row(true));
+        assertRows(execute("SELECT a, s, d FROM %s WHERE a = 2"),
+                   row(2, 2, null));
+
+        assertRows(execute("UPDATE %s SET s = 4 WHERE a = 4 IF s != 4"),
+                   row(true));
+        assertRows(execute("SELECT a, s, d FROM %s WHERE a = 4"),
+                   row(4, 4, null));
 
         // rejected: IN doesn't contain null
-        assertRows(execute("UPDATE %s SET s = 30 WHERE a = 3 IF s IN (10,20,30)"),
+        assertRows(execute("UPDATE %s SET s = 3 WHERE a = 3 IF s IN (10,20,30)"),
                    row(false));
-        assertRows(execute("SELECT * FROM %s WHERE a = 3"),
-                   row(3, 3, null, null));
+        assertEmpty(execute("SELECT a, s, d FROM %s WHERE a = 3"));
 
         // rejected: comparing number with NULL always returns false
-        for (String operator: new String[] { ">", "<", ">=", "<=", "="})
+        for (String operator : new String[]{ ">", "<", ">=", "<=", "=" })
         {
             assertRows(execute("UPDATE %s SET s = 50 WHERE a = 5 IF s " + operator + " 3"),
                        row(false));
-            assertRows(execute("SELECT * FROM %s WHERE a = 5"),
-                       row(5, 5, null, null));
+            assertEmpty(execute("SELECT * FROM %s WHERE a = 5"));
         }
-
     }
 
     @Test
-    public void testConditionalUpdatesWithNonExistingValues() throws Throwable
+    public void testConditionalUpdatesWithNullValues() throws Throwable
     {
-        createTable("CREATE TABLE %s (a int, b int, s int static, d text, PRIMARY KEY (a, b))");
+        createTable("CREATE TABLE %s (a int, b int, s int static, d int, PRIMARY KEY (a, b))");
+
+        // pre-populate, leave out static column
+        for (int i = 1; i <= 5; i++)
+        {
+            execute("INSERT INTO %s (a, b) VALUES (?, ?)", i, 1);
+            execute("INSERT INTO %s (a, b) VALUES (?, ?)", i, 2);
+        }
 
-        conditionalUpdatesWithNonExistingOrNullValues();
+        assertRows(execute("UPDATE %s SET s = 100 WHERE a = 1 IF s = NULL"),
+                   row(true));
+        assertRows(execute("SELECT a, b, s, d FROM %s WHERE a = 1"),
+                   row(1, 1, 100, null),
+                   row(1, 2, 100, null));
+
+        assertRows(execute("UPDATE %s SET s = 200 WHERE a = 2 IF s IN (10,20,NULL)"),
+                   row(true));
+        assertRows(execute("SELECT a, b, s, d FROM %s WHERE a = 2"),
+                   row(2, 1, 200, null),
+                   row(2, 2, 200, null));
 
         // rejected: IN doesn't contain null
-        assertRows(execute("UPDATE %s SET s = 3 WHERE a = 3 IF s IN (10,20,30)"),
-                   row(false));
-        assertEmpty(execute("SELECT a, s, d FROM %s WHERE a = 3"));
+        assertRows(execute("UPDATE %s SET s = 30 WHERE a = 3 IF s IN (10,20,30)"),
+                   row(false, null));
+        assertRows(execute("SELECT * FROM %s WHERE a = 3"),
+                   row(3, 1, null, null),
+                   row(3, 2, null, null));
+
+        assertRows(execute("UPDATE %s SET s = 400 WHERE a = 4 IF s IN (10,20,NULL)"),
+                   row(true));
+        assertRows(execute("SELECT * FROM %s WHERE a = 4"),
+                   row(4, 1, 400, null),
+                   row(4, 2, 400, null));
 
         // rejected: comparing number with NULL always returns false
-        for (String operator : new String[]{ ">", "<", ">=", "<=", "=" })
+        for (String operator: new String[] { ">", "<", ">=", "<=", "="})
         {
             assertRows(execute("UPDATE %s SET s = 50 WHERE a = 5 IF s " + operator + " 3"),
-                       row(false));
-            assertEmpty(execute("SELECT * FROM %s WHERE a = 5"));
+                       row(false, null));
+            assertRows(execute("SELECT * FROM %s WHERE a = 5"),
+                       row(5, 1, null, null),
+                       row(5, 2, null, null));
         }
+
+        assertRows(execute("UPDATE %s SET s = 500 WHERE a = 5 IF s != 5"),
+                   row(true));
+        assertRows(execute("SELECT a, b, s, d FROM %s WHERE a = 5"),
+                   row(5, 1, 500, null),
+                   row(5, 2, 500, null));
+
+        // Similar test, although with two static columns to test limits
+        createTable("CREATE TABLE %s (a int, b int, s1 int static, s2 int static, d int, PRIMARY KEY (a, b))");
+
+        for (int i = 1; i <= 5; i++)
+            for (int j = 0; j < 5; j++)
+                execute("INSERT INTO %s (a, b, d) VALUES (?, ?, ?)", i, j, i + j);
+
+        assertRows(execute("UPDATE %s SET s2 = 100 WHERE a = 1 IF s1 = NULL"),
+                   row(true));
+
+        execute("INSERT INTO %s (a, b, s1) VALUES (?, ?, ?)", 2, 2, 2);
+        assertRows(execute("UPDATE %s SET s1 = 100 WHERE a = 2 IF s2 = NULL"),
+                   row(true));
+
+        execute("INSERT INTO %s (a, b, s1) VALUES (?, ?, ?)", 2, 2, 2);
+        assertRows(execute("UPDATE %s SET s1 = 100 WHERE a = 2 IF s2 = NULL"),
+                   row(true));
     }
 
-    private void conditionalUpdatesWithNonExistingOrNullValues() throws Throwable
+    @Test
+    public void testStaticsWithMultipleConditions() throws Throwable
     {
-        assertRows(execute("UPDATE %s SET s = 1 WHERE a = 1 IF s = NULL"),
-                   row(true));
-        assertRows(execute("SELECT a, s, d FROM %s WHERE a = 1"),
-                   row(1, 1, null));
+        createTable("CREATE TABLE %s (a int, b int, s1 int static, s2 int static, d int, PRIMARY KEY (a, b))");
 
-        assertRows(execute("UPDATE %s SET s = 2 WHERE a = 2 IF s IN (10,20,NULL)"),
+        for (int i = 1; i <= 5; i++)
+        {
+            execute("INSERT INTO %s (a, b, d) VALUES (?, ?, ?)", i, 1, 5);
+            execute("INSERT INTO %s (a, b, d) VALUES (?, ?, ?)", i, 2, 6);
+        }
+
+        assertRows(execute("BEGIN BATCH\n"
+                           + "UPDATE %1$s SET s2 = 102 WHERE a = 1 IF s1 = null;\n"
+                           + "UPDATE %1$s SET s1 = 101 WHERE a = 1 IF s2 = null;\n"
+                           + "APPLY BATCH"),
                    row(true));
-        assertRows(execute("SELECT a, s, d FROM %s WHERE a = 2"),
-                   row(2, 2, null));
+        assertRows(execute("SELECT * FROM %s WHERE a = 1"),
+                   row(1, 1, 101, 102, 5),
+                   row(1, 2, 101, 102, 6));
 
-        assertRows(execute("UPDATE %s SET s = 4 WHERE a = 4 IF s != 4"),
+
+        assertRows(execute("BEGIN BATCH\n"
+                           + "UPDATE %1$s SET s2 = 202 WHERE a = 2 IF s1 = null;\n"
+                           + "UPDATE %1$s SET s1 = 201 WHERE a = 2 IF s2 = null;\n"
+                           + "UPDATE %1$s SET d = 203 WHERE a = 2 AND b = 1 IF d = 5;\n"
+                           + "UPDATE %1$s SET d = 204 WHERE a = 2 AND b = 2 IF d = 6;\n"
+                           + "APPLY BATCH"),
                    row(true));
-        assertRows(execute("SELECT a, s, d FROM %s WHERE a = 4"),
-                   row(4, 4, null));
+
+        assertRows(execute("SELECT * FROM %s WHERE a = 2"),
+                   row(2, 1, 201, 202, 203),
+                   row(2, 2, 201, 202, 204));
+
+        assertRows(execute("BEGIN BATCH\n"
+                           + "UPDATE %1$s SET s2 = 202 WHERE a = 20 IF s1 = null;\n"
+                           + "UPDATE %1$s SET s1 = 201 WHERE a = 20 IF s2 = null;\n"
+                           + "UPDATE %1$s SET d = 203 WHERE a = 20 AND b = 1 IF d = 5;\n"
+                           + "UPDATE %1$s SET d = 204 WHERE a = 20 AND b = 2 IF d = 6;\n"
+                           + "APPLY BATCH"),
+                   row(false));
     }
 
     @Test
@@ -1129,7 +1217,14 @@ public class InsertUpdateIfConditionTest extends CQLTester
         for (int i = 1; i <= 6; i++)
             execute("INSERT INTO %s (a, b) VALUES (?, ?)", i, i);
 
-        testConditionalUpdatesWithNonExistingOrNullValuesWithBatch();
+        // applied: null is indistiguishable from empty value, lwt condition is executed before INSERT
+        assertRows(execute("BEGIN BATCH\n"
+                           + "INSERT INTO %1$s (a, b, d) values (2, 2, 'a');\n"
+                           + "UPDATE %1$s SET s = 2 WHERE a = 2 IF s = null;\n"
+                           + "APPLY BATCH"),
+                   row(true));
+        assertRows(execute("SELECT * FROM %s WHERE a = 2"),
+                   row(2, 2, 2, "a"));
 
         // rejected: comparing number with null value always returns false
         for (String operator: new String[] { ">", "<", ">=", "<=", "="})
@@ -1138,20 +1233,36 @@ public class InsertUpdateIfConditionTest extends CQLTester
                                + "INSERT INTO %1$s (a, b, s, d) values (3, 3, 40, 'a');\n"
                                + "UPDATE %1$s SET s = 30 WHERE a = 3 IF s " + operator + " 5;\n"
                                + "APPLY BATCH"),
-                       row(false));
+                       row(false, 3, 3, null));
             assertRows(execute("SELECT * FROM %s WHERE a = 3"),
                        row(3, 3, null, null));
         }
 
+        // applied: lwt condition is executed before INSERT, update is applied after it
+        assertRows(execute("BEGIN BATCH\n"
+                           + "INSERT INTO %1$s (a, b, s, d) values (4, 4, 4, 'a');\n"
+                           + "UPDATE %1$s SET s = 5 WHERE a = 4 IF s = null;\n"
+                           + "APPLY BATCH"),
+                   row(true));
+        assertRows(execute("SELECT * FROM %s WHERE a = 4"),
+                   row(4, 4, 5, "a"));
+
+        assertRows(execute("BEGIN BATCH\n"
+                           + "INSERT INTO %1$s (a, b, s, d) values (5, 5, 5, 'a');\n"
+                           + "UPDATE %1$s SET s = 6 WHERE a = 5 IF s IN (1,2,null);\n"
+                           + "APPLY BATCH"),
+                   row(true));
+        assertRows(execute("SELECT * FROM %s WHERE a = 5"),
+                   row(5, 5, 6, "a"));
+
         // rejected: IN doesn't contain null
         assertRows(execute("BEGIN BATCH\n"
                            + "INSERT INTO %1$s (a, b, s, d) values (6, 6, 70, 'a');\n"
                            + "UPDATE %1$s SET s = 60 WHERE a = 6 IF s IN (1,2,3);\n"
                            + "APPLY BATCH"),
-                   row(false));
+                   row(false, 6, 6, null));
         assertRows(execute("SELECT * FROM %s WHERE a = 6"),
                    row(6, 6, null, null));
-
     }
 
     @Test
@@ -1159,31 +1270,6 @@ public class InsertUpdateIfConditionTest extends CQLTester
     {
         createTable("CREATE TABLE %s (a int, b int, s int static, d text, PRIMARY KEY (a, b))");
 
-        testConditionalUpdatesWithNonExistingOrNullValuesWithBatch();
-
-        // rejected: comparing number with non-existing value always returns false
-        for (String operator: new String[] { ">", "<", ">=", "<=", "="})
-        {
-            assertRows(execute("BEGIN BATCH\n"
-                               + "INSERT INTO %1$s (a, b, s, d) values (3, 3, 3, 'a');\n"
-                               + "UPDATE %1$s SET s = 3 WHERE a = 3 IF s " + operator + " 5;\n"
-                               + "APPLY BATCH"),
-                       row(false));
-            assertEmpty(execute("SELECT * FROM %s WHERE a = 3"));
-        }
-
-        // rejected: IN doesn't contain null
-        assertRows(execute("BEGIN BATCH\n"
-                           + "INSERT INTO %1$s (a, b, s, d) values (6, 6, 6, 'a');\n"
-                           + "UPDATE %1$s SET s = 7 WHERE a = 6 IF s IN (1,2,3);\n"
-                           + "APPLY BATCH"),
-                   row(false));
-        assertEmpty(execute("SELECT * FROM %s WHERE a = 6"));
-    }
-
-    private void testConditionalUpdatesWithNonExistingOrNullValuesWithBatch() throws Throwable
-    {
-        // applied: null is indistiguishable from empty value, lwt condition is executed before INSERT
         assertRows(execute("BEGIN BATCH\n"
                            + "INSERT INTO %1$s (a, b, d) values (2, 2, 'a');\n"
                            + "UPDATE %1$s SET s = 2 WHERE a = 2 IF s = null;\n"
@@ -1199,7 +1285,7 @@ public class InsertUpdateIfConditionTest extends CQLTester
                            + "APPLY BATCH"),
                    row(true));
         assertRows(execute("SELECT * FROM %s WHERE a = 4"),
-                   row(4, 4, 5, "a"));
+                   row(4, 4, 5, "a")); // Note that the update wins because 5 > 4 (we have a timestamp tie, so values are used)
 
         assertRows(execute("BEGIN BATCH\n"
                            + "INSERT INTO %1$s (a, b, s, d) values (5, 5, 5, 'a');\n"
@@ -1207,7 +1293,7 @@ public class InsertUpdateIfConditionTest extends CQLTester
                            + "APPLY BATCH"),
                    row(true));
         assertRows(execute("SELECT * FROM %s WHERE a = 5"),
-                   row(5, 5, 6, "a"));
+                   row(5, 5, 6, "a")); // Same as above
 
         assertRows(execute("BEGIN BATCH\n"
                            + "INSERT INTO %1$s (a, b, s, d) values (7, 7, 7, 'a');\n"
@@ -1215,7 +1301,26 @@ public class InsertUpdateIfConditionTest extends CQLTester
                            + "APPLY BATCH"),
                    row(true));
         assertRows(execute("SELECT * FROM %s WHERE a = 7"),
-                   row(7, 7, 8, "a"));
+                   row(7, 7, 8, "a")); // Same as above
+
+        // rejected: comparing number with non-existing value always returns false
+        for (String operator: new String[] { ">", "<", ">=", "<=", "="})
+        {
+            assertRows(execute("BEGIN BATCH\n"
+                               + "INSERT INTO %1$s (a, b, s, d) values (3, 3, 3, 'a');\n"
+                               + "UPDATE %1$s SET s = 3 WHERE a = 3 IF s " + operator + " 5;\n"
+                               + "APPLY BATCH"),
+                       row(false));
+            assertEmpty(execute("SELECT * FROM %s WHERE a = 3"));
+        }
+
+        // rejected: IN doesn't contain null
+        assertRows(execute("BEGIN BATCH\n"
+                           + "INSERT INTO %1$s (a, b, s, d) values (6, 6, 6, 'a');\n"
+                           + "UPDATE %1$s SET s = 7 WHERE a = 6 IF s IN (1,2,3);\n"
+                           + "APPLY BATCH"),
+                   row(false));
+        assertEmpty(execute("SELECT * FROM %s WHERE a = 6"));
     }
 
     @Test
@@ -1233,7 +1338,7 @@ public class InsertUpdateIfConditionTest extends CQLTester
 
         // rejected: IN doesn't contain null
         assertRows(execute("DELETE s1 FROM %s WHERE a = 2 IF s2 IN (10,20,30)"),
-                   row(false));
+                   row(false, null));
         assertRows(execute("SELECT * FROM %s WHERE a = 2"),
                    row(2, 2, 2, null, 2));
 
@@ -1251,7 +1356,7 @@ public class InsertUpdateIfConditionTest extends CQLTester
         for (String operator : new String[]{ ">", "<", ">=", "<=", "=" })
         {
             assertRows(execute("DELETE s1 FROM %s WHERE a = 5 IF s2 " + operator + " 3"),
-                       row(false));
+                       row(false, null));
             assertRows(execute("SELECT * FROM %s WHERE a = 5"),
                        row(5, 5, 5, null, 5));
         }
@@ -1262,7 +1367,6 @@ public class InsertUpdateIfConditionTest extends CQLTester
     {
         createTable("CREATE TABLE %s (a int, b int, s1 int static, s2 int static, v int, PRIMARY KEY (a, b))");
 
-        // applied: null is indistiguishable from empty value, lwt condition is executed before INSERT
         assertRows(execute("BEGIN BATCH\n"
                            + "INSERT INTO %1$s (a, b, s1, v) values (2, 2, 2, 2);\n"
                            + "DELETE s1 FROM %1$s WHERE a = 2 IF s2 = null;\n"
@@ -1290,6 +1394,7 @@ public class InsertUpdateIfConditionTest extends CQLTester
                    row(false));
         assertEmpty(execute("SELECT * FROM %s WHERE a = 6"));
 
+        // Note that on equal timestamp, tombstone wins so the DELETE wins
         assertRows(execute("BEGIN BATCH\n"
                            + "INSERT INTO %1$s (a, b, s1, v) values (4, 4, 4, 4);\n"
                            + "DELETE s1 FROM %1$s WHERE a = 4 IF s2 = null;\n"
@@ -1298,6 +1403,7 @@ public class InsertUpdateIfConditionTest extends CQLTester
         assertRows(execute("SELECT * FROM %s WHERE a = 4"),
                    row(4, 4, null, null, 4));
 
+        // Note that on equal timestamp, tombstone wins so the DELETE wins
         assertRows(execute("BEGIN BATCH\n"
                            + "INSERT INTO %1$s (a, b, s1, v) VALUES (5, 5, 5, 5);\n"
                            + "DELETE s1 FROM %1$s WHERE a = 5 IF s1 IN (1,2,null);\n"
@@ -1306,6 +1412,7 @@ public class InsertUpdateIfConditionTest extends CQLTester
         assertRows(execute("SELECT * FROM %s WHERE a = 5"),
                    row(5, 5, null, null, 5));
 
+        // Note that on equal timestamp, tombstone wins so the DELETE wins
         assertRows(execute("BEGIN BATCH\n"
                            + "INSERT INTO %1$s (a, b, s1, v) values (7, 7, 7, 7);\n"
                            + "DELETE s1 FROM %1$s WHERE a = 7 IF s2 != 7;\n"


[4/4] cassandra git commit: Merge branch 'cassandra-3.0' into trunk

Posted by sl...@apache.org.
Merge branch 'cassandra-3.0' into trunk

* cassandra-3.0:
  Establish consistent distinction between non-existing partition and NULL value for LWTs on static columns
  If CF has no clustering columns, any row cache is full partition cache (CASSANDRA-12499)


Project: http://git-wip-us.apache.org/repos/asf/cassandra/repo
Commit: http://git-wip-us.apache.org/repos/asf/cassandra/commit/5f0a77b6
Tree: http://git-wip-us.apache.org/repos/asf/cassandra/tree/5f0a77b6
Diff: http://git-wip-us.apache.org/repos/asf/cassandra/diff/5f0a77b6

Branch: refs/heads/trunk
Commit: 5f0a77b6d3a303c14c29892f617e7e261bc1de3a
Parents: eace9aa ead27d9
Author: Sylvain Lebresne <sy...@datastax.com>
Authored: Wed Sep 21 16:28:58 2016 +0200
Committer: Sylvain Lebresne <sy...@datastax.com>
Committed: Wed Sep 21 16:28:58 2016 +0200

----------------------------------------------------------------------
 CHANGES.txt                                     |   1 +
 .../cql3/statements/CQL3CasRequest.java         | 113 ++++++---
 .../operations/InsertUpdateIfConditionTest.java | 249 +++++++++++++------
 3 files changed, 254 insertions(+), 109 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/cassandra/blob/5f0a77b6/CHANGES.txt
----------------------------------------------------------------------
diff --cc CHANGES.txt
index 15fb000,abffd80..f49171e
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@@ -1,72 -1,15 +1,73 @@@
 -3.0.10
 - * Establish consistent distinction between non-existing partition and NULL value for LWTs on static columns (CASSANDRA-12060)
 +3.10
 + * Add a blocking task to Index, run before joining the ring (CASSANDRA-12039)
 + * Fix NPE when using CQLSSTableWriter (CASSANDRA-12667)
 + * Support optional backpressure strategies at the coordinator (CASSANDRA-9318)
 + * Make randompartitioner work with new vnode allocation (CASSANDRA-12647)
 + * Fix cassandra-stress graphing (CASSANDRA-12237)
 + * Allow filtering on partition key columns for queries without secondary indexes (CASSANDRA-11031)
 + * Fix Cassandra Stress reporting thread model and precision (CASSANDRA-12585)
 + * Add JMH benchmarks.jar (CASSANDRA-12586)
 + * Add row offset support to SASI (CASSANDRA-11990)
 + * Cleanup uses of AlterTableStatementColumn (CASSANDRA-12567)
 + * Add keep-alive to streaming (CASSANDRA-11841)
 + * Tracing payload is passed through newSession(..) (CASSANDRA-11706)
 + * avoid deleting non existing sstable files and improve related log messages (CASSANDRA-12261)
 + * json/yaml output format for nodetool compactionhistory (CASSANDRA-12486)
 + * Retry all internode messages once after a connection is
 +   closed and reopened (CASSANDRA-12192)
 + * Add support to rebuild from targeted replica (CASSANDRA-9875)
 + * Add sequence distribution type to cassandra stress (CASSANDRA-12490)
 + * "SELECT * FROM foo LIMIT ;" does not error out (CASSANDRA-12154)
 + * Define executeLocally() at the ReadQuery Level (CASSANDRA-12474)
 + * Extend read/write failure messages with a map of replica addresses
 +   to error codes in the v5 native protocol (CASSANDRA-12311)
 + * Fix rebuild of SASI indexes with existing index files (CASSANDRA-12374)
 + * Let DatabaseDescriptor not implicitly startup services (CASSANDRA-9054, 12550)
 + * Fix clustering indexes in presence of static columns in SASI (CASSANDRA-12378)
 + * Fix queries on columns with reversed type on SASI indexes (CASSANDRA-12223)
 + * Added slow query log (CASSANDRA-12403)
 + * Count full coordinated request against timeout (CASSANDRA-12256)
 + * Allow TTL with null value on insert and update (CASSANDRA-12216)
 + * Make decommission operation resumable (CASSANDRA-12008)
 + * Add support to one-way targeted repair (CASSANDRA-9876)
 + * Remove clientutil jar (CASSANDRA-11635)
 + * Fix compaction throughput throttle (CASSANDRA-12366)
 + * Delay releasing Memtable memory on flush until PostFlush has finished running (CASSANDRA-12358)
 + * Cassandra stress should dump all setting on startup (CASSANDRA-11914)
 + * Make it possible to compact a given token range (CASSANDRA-10643)
 + * Allow updating DynamicEndpointSnitch properties via JMX (CASSANDRA-12179)
 + * Collect metrics on queries by consistency level (CASSANDRA-7384)
 + * Add support for GROUP BY to SELECT statement (CASSANDRA-10707)
 + * Deprecate memtable_cleanup_threshold and update default for memtable_flush_writers (CASSANDRA-12228)
 + * Upgrade to OHC 0.4.4 (CASSANDRA-12133)
 + * Add version command to cassandra-stress (CASSANDRA-12258)
 + * Create compaction-stress tool (CASSANDRA-11844)
 + * Garbage-collecting compaction operation and schema option (CASSANDRA-7019)
 + * Add beta protocol flag for v5 native protocol (CASSANDRA-12142)
 + * Support filtering on non-PRIMARY KEY columns in the CREATE
 +   MATERIALIZED VIEW statement's WHERE clause (CASSANDRA-10368)
 + * Unify STDOUT and SYSTEMLOG logback format (CASSANDRA-12004)
 + * COPY FROM should raise error for non-existing input files (CASSANDRA-12174)
 + * Faster write path (CASSANDRA-12269)
 + * Option to leave omitted columns in INSERT JSON unset (CASSANDRA-11424)
 + * Support json/yaml output in nodetool tpstats (CASSANDRA-12035)
 + * Expose metrics for successful/failed authentication attempts (CASSANDRA-10635)
 + * Prepend snapshot name with "truncated" or "dropped" when a snapshot
 +   is taken before truncating or dropping a table (CASSANDRA-12178)
 + * Optimize RestrictionSet (CASSANDRA-12153)
 + * cqlsh does not automatically downgrade CQL version (CASSANDRA-12150)
 + * Omit (de)serialization of state variable in UDAs (CASSANDRA-9613)
 + * Create a system table to expose prepared statements (CASSANDRA-8831)
 + * Reuse DataOutputBuffer from ColumnIndex (CASSANDRA-11970)
 + * Remove DatabaseDescriptor dependency from SegmentedFile (CASSANDRA-11580)
 + * Add supplied username to authentication error messages (CASSANDRA-12076)
 + * Remove pre-startup check for open JMX port (CASSANDRA-12074)
 + * Remove compaction Severity from DynamicEndpointSnitch (CASSANDRA-11738)
 + * Restore resumable hints delivery (CASSANDRA-11960)
 +Merged from 3.0:
   * Extend ColumnIdentifier.internedInstances key to include the type that generated the byte buffer (CASSANDRA-12516)
 - * Backport CASSANDRA-10756 (race condition in NativeTransportService shutdown) (CASSANDRA-12472)
 - * If CF has no clustering columns, any row cache is full partition cache (CASSANDRA-12499)
 -Merged from 2.1:
 - * Add system property to set the max number of native transport requests in queue (CASSANDRA-11363)
 -
 -
 -3.0.9
++ * Establish consistent distinction between non-existing partition and NULL value for LWTs on static columns (CASSANDRA-12060)
   * Handle composite prefixes with final EOC=0 as in 2.x and refactor LegacyLayout.decodeBound (CASSANDRA-12423)
 - * Fix paging for 2.x to 3.x upgrades (CASSANDRA-11195)
   * select_distinct_with_deletions_test failing on non-vnode environments (CASSANDRA-11126)
   * Stack Overflow returned to queries while upgrading (CASSANDRA-12527)
   * Fix legacy regex for temporary files from 2.2 (CASSANDRA-12565)

http://git-wip-us.apache.org/repos/asf/cassandra/blob/5f0a77b6/src/java/org/apache/cassandra/cql3/statements/CQL3CasRequest.java
----------------------------------------------------------------------

http://git-wip-us.apache.org/repos/asf/cassandra/blob/5f0a77b6/test/unit/org/apache/cassandra/cql3/validation/operations/InsertUpdateIfConditionTest.java
----------------------------------------------------------------------


[3/4] cassandra git commit: Establish consistent distinction between non-existing partition and NULL value for LWTs on static columns

Posted by sl...@apache.org.
Establish consistent distinction between non-existing partition and NULL value for LWTs on static columns

patch by Alex Petrov; reviewed by Sylvain Lebresne for CASSANDRA-12060


Project: http://git-wip-us.apache.org/repos/asf/cassandra/repo
Commit: http://git-wip-us.apache.org/repos/asf/cassandra/commit/ead27d9e
Tree: http://git-wip-us.apache.org/repos/asf/cassandra/tree/ead27d9e
Diff: http://git-wip-us.apache.org/repos/asf/cassandra/diff/ead27d9e

Branch: refs/heads/cassandra-3.0
Commit: ead27d9e664726da7695fa11ea7e022c11ee7590
Parents: ec60487
Author: Alex Petrov <ol...@gmail.com>
Authored: Wed Aug 10 13:15:30 2016 +0200
Committer: Sylvain Lebresne <sy...@datastax.com>
Committed: Wed Sep 21 16:27:32 2016 +0200

----------------------------------------------------------------------
 CHANGES.txt                                     |   1 +
 .../cql3/statements/CQL3CasRequest.java         | 113 ++++++---
 .../operations/InsertUpdateIfConditionTest.java | 249 +++++++++++++------
 3 files changed, 254 insertions(+), 109 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/cassandra/blob/ead27d9e/CHANGES.txt
----------------------------------------------------------------------
diff --git a/CHANGES.txt b/CHANGES.txt
index da56e00..abffd80 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,4 +1,5 @@
 3.0.10
+ * Establish consistent distinction between non-existing partition and NULL value for LWTs on static columns (CASSANDRA-12060)
  * Extend ColumnIdentifier.internedInstances key to include the type that generated the byte buffer (CASSANDRA-12516)
  * Backport CASSANDRA-10756 (race condition in NativeTransportService shutdown) (CASSANDRA-12472)
  * If CF has no clustering columns, any row cache is full partition cache (CASSANDRA-12499)

http://git-wip-us.apache.org/repos/asf/cassandra/blob/ead27d9e/src/java/org/apache/cassandra/cql3/statements/CQL3CasRequest.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/cql3/statements/CQL3CasRequest.java b/src/java/org/apache/cassandra/cql3/statements/CQL3CasRequest.java
index 9564005..cf4110c 100644
--- a/src/java/org/apache/cassandra/cql3/statements/CQL3CasRequest.java
+++ b/src/java/org/apache/cassandra/cql3/statements/CQL3CasRequest.java
@@ -26,8 +26,8 @@ import com.google.common.collect.Multimap;
 import org.apache.cassandra.config.CFMetaData;
 import org.apache.cassandra.cql3.*;
 import org.apache.cassandra.db.*;
-import org.apache.cassandra.db.filter.ClusteringIndexSliceFilter;
-import org.apache.cassandra.db.filter.ColumnFilter;
+import org.apache.cassandra.db.filter.*;
+import org.apache.cassandra.db.rows.Row;
 import org.apache.cassandra.db.partitions.FilteredPartition;
 import org.apache.cassandra.db.partitions.Partition;
 import org.apache.cassandra.db.partitions.PartitionUpdate;
@@ -48,10 +48,13 @@ public class CQL3CasRequest implements CASRequest
     private final boolean updatesStaticRow;
     private boolean hasExists; // whether we have an exist or if not exist condition
 
+    // Conditions on the static row. We keep it separate from 'conditions' as most things related to the static row are
+    // special cases anyway.
+    private RowCondition staticConditions;
     // We index RowCondition by the clustering of the row they applied to for 2 reasons:
-    //   1) this allows to keep things sorted to build the ColumnSlice array below
+    //   1) this allows to keep things sorted to build the read command below
     //   2) this allows to detect when contradictory conditions are set (not exists with some other conditions on the same row)
-    private final SortedMap<Clustering, RowCondition> conditions;
+    private final TreeMap<Clustering, RowCondition> conditions;
 
     private final List<RowUpdate> updates = new ArrayList<>();
 
@@ -78,34 +81,37 @@ public class CQL3CasRequest implements CASRequest
 
     public void addNotExist(Clustering clustering) throws InvalidRequestException
     {
-        RowCondition previous = conditions.put(clustering, new NotExistCondition(clustering));
-        if (previous != null && !(previous instanceof NotExistCondition))
-        {
-            // these should be prevented by the parser, but it doesn't hurt to check
-            if (previous instanceof ExistCondition)
-                throw new InvalidRequestException("Cannot mix IF EXISTS and IF NOT EXISTS conditions for the same row");
-            else
-                throw new InvalidRequestException("Cannot mix IF conditions and IF NOT EXISTS for the same row");
-        }
-        hasExists = true;
+        addExistsCondition(clustering, new NotExistCondition(clustering), true);
     }
 
     public void addExist(Clustering clustering) throws InvalidRequestException
     {
-        RowCondition previous = conditions.put(clustering, new ExistCondition(clustering));
-        // this should be prevented by the parser, but it doesn't hurt to check
-        if (previous instanceof NotExistCondition)
-            throw new InvalidRequestException("Cannot mix IF EXISTS and IF NOT EXISTS conditions for the same row");
+        addExistsCondition(clustering, new ExistCondition(clustering), false);
+    }
+
+    private void addExistsCondition(Clustering clustering, RowCondition condition, boolean isNotExist)
+    {
+        assert condition instanceof ExistCondition || condition instanceof NotExistCondition;
+        RowCondition previous = getConditionsForRow(clustering);
+        if (previous != null && !(previous.getClass().equals(condition.getClass())))
+        {
+            // these should be prevented by the parser, but it doesn't hurt to check
+            throw (previous instanceof NotExistCondition || previous instanceof ExistCondition)
+                ? new InvalidRequestException("Cannot mix IF EXISTS and IF NOT EXISTS conditions for the same row")
+                : new InvalidRequestException("Cannot mix IF conditions and IF " + (isNotExist ? "NOT " : "") + "EXISTS for the same row");
+        }
+
+        setConditionsForRow(clustering, condition);
         hasExists = true;
     }
 
     public void addConditions(Clustering clustering, Collection<ColumnCondition> conds, QueryOptions options) throws InvalidRequestException
     {
-        RowCondition condition = conditions.get(clustering);
+        RowCondition condition = getConditionsForRow(clustering);
         if (condition == null)
         {
             condition = new ColumnsConditions(clustering);
-            conditions.put(clustering, condition);
+            setConditionsForRow(clustering, condition);
         }
         else if (!(condition instanceof ColumnsConditions))
         {
@@ -114,6 +120,25 @@ public class CQL3CasRequest implements CASRequest
         ((ColumnsConditions)condition).addConditions(conds, options);
     }
 
+    private RowCondition getConditionsForRow(Clustering clustering)
+    {
+        return clustering == Clustering.STATIC_CLUSTERING ? staticConditions : conditions.get(clustering);
+    }
+
+    private void setConditionsForRow(Clustering clustering, RowCondition condition)
+    {
+        if (clustering == Clustering.STATIC_CLUSTERING)
+        {
+            assert staticConditions == null;
+            staticConditions = condition;
+        }
+        else
+        {
+            RowCondition previous = conditions.put(clustering, condition);
+            assert previous == null;
+        }
+    }
+
     private PartitionColumns columnsToRead()
     {
         // If all our conditions are columns conditions (IF x = ?), then it's enough to query
@@ -135,23 +160,37 @@ public class CQL3CasRequest implements CASRequest
 
     public SinglePartitionReadCommand readCommand(int nowInSec)
     {
-        assert !conditions.isEmpty();
-        Slices.Builder builder = new Slices.Builder(cfm.comparator, conditions.size());
-        // We always read CQL rows entirely as on CAS failure we want to be able to distinguish between "row exists
-        // but all values for which there were conditions are null" and "row doesn't exists", and we can't rely on the
-        // row marker for that (see #6623)
-        for (Clustering clustering : conditions.keySet())
-        {
-            if (clustering != Clustering.STATIC_CLUSTERING)
-                builder.add(Slice.make(clustering));
-        }
-
-        ClusteringIndexSliceFilter filter = new ClusteringIndexSliceFilter(builder.build(), false);
+        assert staticConditions != null || !conditions.isEmpty();
+
+        // With only a static condition, we still want to make the distinction between a non-existing partition and one
+        // that exists (has some live data) but has not static content. So we query the first live row of the partition.
+        if (conditions.isEmpty())
+            return SinglePartitionReadCommand.create(cfm,
+                                                     nowInSec,
+                                                     ColumnFilter.selection(columnsToRead()),
+                                                     RowFilter.NONE,
+                                                     DataLimits.cqlLimits(1),
+                                                     key,
+                                                     new ClusteringIndexSliceFilter(Slices.ALL, false));
+
+        ClusteringIndexNamesFilter filter = new ClusteringIndexNamesFilter(conditions.navigableKeySet(), false);
         return SinglePartitionReadCommand.create(cfm, nowInSec, key, ColumnFilter.selection(columnsToRead()), filter);
     }
 
+    /**
+     * Checks whether the conditions represented by this object applies provided the current state of the partition on
+     * which those conditions are.
+     *
+     * @param current the partition with current data corresponding to these conditions. More precisely, this must be
+     * the result of executing the command returned by {@link #readCommand}. This can be empty but it should not be
+     * {@code null}.
+     * @return whether the conditions represented by this object applies or not.
+     */
     public boolean appliesTo(FilteredPartition current) throws InvalidRequestException
     {
+        if (staticConditions != null && !staticConditions.appliesTo(current))
+            return false;
+
         for (RowCondition condition : conditions.values())
         {
             if (!condition.appliesTo(current))
@@ -232,7 +271,7 @@ public class CQL3CasRequest implements CASRequest
 
         public boolean appliesTo(FilteredPartition current)
         {
-            return current == null || current.getRow(clustering) == null;
+            return current.getRow(clustering) == null;
         }
     }
 
@@ -245,7 +284,7 @@ public class CQL3CasRequest implements CASRequest
 
         public boolean appliesTo(FilteredPartition current)
         {
-            return current != null && current.getRow(clustering) != null;
+            return current.getRow(clustering) != null;
         }
     }
 
@@ -269,12 +308,10 @@ public class CQL3CasRequest implements CASRequest
 
         public boolean appliesTo(FilteredPartition current) throws InvalidRequestException
         {
-            if (current == null)
-                return conditions.isEmpty();
-
+            Row row = current.getRow(clustering);
             for (ColumnCondition.Bound condition : conditions.values())
             {
-                if (!condition.appliesTo(current.getRow(clustering)))
+                if (!condition.appliesTo(row))
                     return false;
             }
             return true;

http://git-wip-us.apache.org/repos/asf/cassandra/blob/ead27d9e/test/unit/org/apache/cassandra/cql3/validation/operations/InsertUpdateIfConditionTest.java
----------------------------------------------------------------------
diff --git a/test/unit/org/apache/cassandra/cql3/validation/operations/InsertUpdateIfConditionTest.java b/test/unit/org/apache/cassandra/cql3/validation/operations/InsertUpdateIfConditionTest.java
index a1ee4f8..352100e 100644
--- a/test/unit/org/apache/cassandra/cql3/validation/operations/InsertUpdateIfConditionTest.java
+++ b/test/unit/org/apache/cassandra/cql3/validation/operations/InsertUpdateIfConditionTest.java
@@ -111,7 +111,8 @@ public class InsertUpdateIfConditionTest extends CQLTester
         // Shouldn't apply
         assertRows(execute("UPDATE %s SET v1 = 3, v2 = 'bar' WHERE k = 0 IF EXISTS"), row(false));
 
-        // Should apply
+        // Shouldn't apply
+        assertEmpty(execute("SELECT * FROM %s WHERE k = 0"));
         assertRows(execute("DELETE FROM %s WHERE k = 0 IF v1 IN (null)"), row(true));
 
         createTable(" CREATE TABLE %s (k int, c int, v1 text, PRIMARY KEY(k, c))");
@@ -1038,14 +1039,20 @@ public class InsertUpdateIfConditionTest extends CQLTester
         assertRows(execute("SELECT * FROM %s WHERE a = 6"),
                    row(6, 6, 6, "a"));
 
+        execute("INSERT INTO %s (a, b, s, d) values (7, 7, 100, 'a')");
+        assertRows(execute("UPDATE %s SET s = 7 WHERE a = 7 IF s = 101"),
+                   row(false, 100));
+        assertRows(execute("SELECT * FROM %s WHERE a = 7"),
+                   row(7, 7, 100, "a"));
+
         // pre-existing row with null in the static column
         execute("INSERT INTO %s (a, b, d) values (7, 7, 'a')");
         assertRows(execute("UPDATE %s SET s = 7 WHERE a = 7 IF s = NULL"),
-                   row(true));
+                   row(false, 100));
         assertRows(execute("SELECT * FROM %s WHERE a = 7"),
-                   row(7, 7, 7, "a"));
+                   row(7, 7, 100, "a"));
 
-        // deleting row before CAS
+        // deleting row before CAS makes it effectively non-existing
         execute("DELETE FROM %s WHERE a = 8;");
         assertRows(execute("UPDATE %s SET s = 8 WHERE a = 8 IF s = NULL"),
                    row(true));
@@ -1054,70 +1061,151 @@ public class InsertUpdateIfConditionTest extends CQLTester
     }
 
     @Test
-    public void testConditionalUpdatesWithNullValues() throws Throwable
+    public void testConditionalUpdatesWithNonExistingValues() throws Throwable
     {
         createTable("CREATE TABLE %s (a int, b int, s int static, d text, PRIMARY KEY (a, b))");
 
-        // pre-populate, leave out static column
-        for (int i = 1; i <= 5; i++)
-            execute("INSERT INTO %s (a, b) VALUES (?, ?)", i, i);
+        assertRows(execute("UPDATE %s SET s = 1 WHERE a = 1 IF s = NULL"),
+                   row(true));
+        assertRows(execute("SELECT a, s, d FROM %s WHERE a = 1"),
+                   row(1, 1, null));
 
-        conditionalUpdatesWithNonExistingOrNullValues();
+        assertRows(execute("UPDATE %s SET s = 2 WHERE a = 2 IF s IN (10,20,NULL)"),
+                   row(true));
+        assertRows(execute("SELECT a, s, d FROM %s WHERE a = 2"),
+                   row(2, 2, null));
+
+        assertRows(execute("UPDATE %s SET s = 4 WHERE a = 4 IF s != 4"),
+                   row(true));
+        assertRows(execute("SELECT a, s, d FROM %s WHERE a = 4"),
+                   row(4, 4, null));
 
         // rejected: IN doesn't contain null
-        assertRows(execute("UPDATE %s SET s = 30 WHERE a = 3 IF s IN (10,20,30)"),
+        assertRows(execute("UPDATE %s SET s = 3 WHERE a = 3 IF s IN (10,20,30)"),
                    row(false));
-        assertRows(execute("SELECT * FROM %s WHERE a = 3"),
-                   row(3, 3, null, null));
+        assertEmpty(execute("SELECT a, s, d FROM %s WHERE a = 3"));
 
         // rejected: comparing number with NULL always returns false
-        for (String operator: new String[] { ">", "<", ">=", "<=", "="})
+        for (String operator : new String[]{ ">", "<", ">=", "<=", "=" })
         {
             assertRows(execute("UPDATE %s SET s = 50 WHERE a = 5 IF s " + operator + " 3"),
                        row(false));
-            assertRows(execute("SELECT * FROM %s WHERE a = 5"),
-                       row(5, 5, null, null));
+            assertEmpty(execute("SELECT * FROM %s WHERE a = 5"));
         }
-
     }
 
     @Test
-    public void testConditionalUpdatesWithNonExistingValues() throws Throwable
+    public void testConditionalUpdatesWithNullValues() throws Throwable
     {
-        createTable("CREATE TABLE %s (a int, b int, s int static, d text, PRIMARY KEY (a, b))");
+        createTable("CREATE TABLE %s (a int, b int, s int static, d int, PRIMARY KEY (a, b))");
+
+        // pre-populate, leave out static column
+        for (int i = 1; i <= 5; i++)
+        {
+            execute("INSERT INTO %s (a, b) VALUES (?, ?)", i, 1);
+            execute("INSERT INTO %s (a, b) VALUES (?, ?)", i, 2);
+        }
 
-        conditionalUpdatesWithNonExistingOrNullValues();
+        assertRows(execute("UPDATE %s SET s = 100 WHERE a = 1 IF s = NULL"),
+                   row(true));
+        assertRows(execute("SELECT a, b, s, d FROM %s WHERE a = 1"),
+                   row(1, 1, 100, null),
+                   row(1, 2, 100, null));
+
+        assertRows(execute("UPDATE %s SET s = 200 WHERE a = 2 IF s IN (10,20,NULL)"),
+                   row(true));
+        assertRows(execute("SELECT a, b, s, d FROM %s WHERE a = 2"),
+                   row(2, 1, 200, null),
+                   row(2, 2, 200, null));
 
         // rejected: IN doesn't contain null
-        assertRows(execute("UPDATE %s SET s = 3 WHERE a = 3 IF s IN (10,20,30)"),
-                   row(false));
-        assertEmpty(execute("SELECT a, s, d FROM %s WHERE a = 3"));
+        assertRows(execute("UPDATE %s SET s = 30 WHERE a = 3 IF s IN (10,20,30)"),
+                   row(false, null));
+        assertRows(execute("SELECT * FROM %s WHERE a = 3"),
+                   row(3, 1, null, null),
+                   row(3, 2, null, null));
+
+        assertRows(execute("UPDATE %s SET s = 400 WHERE a = 4 IF s IN (10,20,NULL)"),
+                   row(true));
+        assertRows(execute("SELECT * FROM %s WHERE a = 4"),
+                   row(4, 1, 400, null),
+                   row(4, 2, 400, null));
 
         // rejected: comparing number with NULL always returns false
-        for (String operator : new String[]{ ">", "<", ">=", "<=", "=" })
+        for (String operator: new String[] { ">", "<", ">=", "<=", "="})
         {
             assertRows(execute("UPDATE %s SET s = 50 WHERE a = 5 IF s " + operator + " 3"),
-                       row(false));
-            assertEmpty(execute("SELECT * FROM %s WHERE a = 5"));
+                       row(false, null));
+            assertRows(execute("SELECT * FROM %s WHERE a = 5"),
+                       row(5, 1, null, null),
+                       row(5, 2, null, null));
         }
+
+        assertRows(execute("UPDATE %s SET s = 500 WHERE a = 5 IF s != 5"),
+                   row(true));
+        assertRows(execute("SELECT a, b, s, d FROM %s WHERE a = 5"),
+                   row(5, 1, 500, null),
+                   row(5, 2, 500, null));
+
+        // Similar test, although with two static columns to test limits
+        createTable("CREATE TABLE %s (a int, b int, s1 int static, s2 int static, d int, PRIMARY KEY (a, b))");
+
+        for (int i = 1; i <= 5; i++)
+            for (int j = 0; j < 5; j++)
+                execute("INSERT INTO %s (a, b, d) VALUES (?, ?, ?)", i, j, i + j);
+
+        assertRows(execute("UPDATE %s SET s2 = 100 WHERE a = 1 IF s1 = NULL"),
+                   row(true));
+
+        execute("INSERT INTO %s (a, b, s1) VALUES (?, ?, ?)", 2, 2, 2);
+        assertRows(execute("UPDATE %s SET s1 = 100 WHERE a = 2 IF s2 = NULL"),
+                   row(true));
+
+        execute("INSERT INTO %s (a, b, s1) VALUES (?, ?, ?)", 2, 2, 2);
+        assertRows(execute("UPDATE %s SET s1 = 100 WHERE a = 2 IF s2 = NULL"),
+                   row(true));
     }
 
-    private void conditionalUpdatesWithNonExistingOrNullValues() throws Throwable
+    @Test
+    public void testStaticsWithMultipleConditions() throws Throwable
     {
-        assertRows(execute("UPDATE %s SET s = 1 WHERE a = 1 IF s = NULL"),
-                   row(true));
-        assertRows(execute("SELECT a, s, d FROM %s WHERE a = 1"),
-                   row(1, 1, null));
+        createTable("CREATE TABLE %s (a int, b int, s1 int static, s2 int static, d int, PRIMARY KEY (a, b))");
 
-        assertRows(execute("UPDATE %s SET s = 2 WHERE a = 2 IF s IN (10,20,NULL)"),
+        for (int i = 1; i <= 5; i++)
+        {
+            execute("INSERT INTO %s (a, b, d) VALUES (?, ?, ?)", i, 1, 5);
+            execute("INSERT INTO %s (a, b, d) VALUES (?, ?, ?)", i, 2, 6);
+        }
+
+        assertRows(execute("BEGIN BATCH\n"
+                           + "UPDATE %1$s SET s2 = 102 WHERE a = 1 IF s1 = null;\n"
+                           + "UPDATE %1$s SET s1 = 101 WHERE a = 1 IF s2 = null;\n"
+                           + "APPLY BATCH"),
                    row(true));
-        assertRows(execute("SELECT a, s, d FROM %s WHERE a = 2"),
-                   row(2, 2, null));
+        assertRows(execute("SELECT * FROM %s WHERE a = 1"),
+                   row(1, 1, 101, 102, 5),
+                   row(1, 2, 101, 102, 6));
 
-        assertRows(execute("UPDATE %s SET s = 4 WHERE a = 4 IF s != 4"),
+
+        assertRows(execute("BEGIN BATCH\n"
+                           + "UPDATE %1$s SET s2 = 202 WHERE a = 2 IF s1 = null;\n"
+                           + "UPDATE %1$s SET s1 = 201 WHERE a = 2 IF s2 = null;\n"
+                           + "UPDATE %1$s SET d = 203 WHERE a = 2 AND b = 1 IF d = 5;\n"
+                           + "UPDATE %1$s SET d = 204 WHERE a = 2 AND b = 2 IF d = 6;\n"
+                           + "APPLY BATCH"),
                    row(true));
-        assertRows(execute("SELECT a, s, d FROM %s WHERE a = 4"),
-                   row(4, 4, null));
+
+        assertRows(execute("SELECT * FROM %s WHERE a = 2"),
+                   row(2, 1, 201, 202, 203),
+                   row(2, 2, 201, 202, 204));
+
+        assertRows(execute("BEGIN BATCH\n"
+                           + "UPDATE %1$s SET s2 = 202 WHERE a = 20 IF s1 = null;\n"
+                           + "UPDATE %1$s SET s1 = 201 WHERE a = 20 IF s2 = null;\n"
+                           + "UPDATE %1$s SET d = 203 WHERE a = 20 AND b = 1 IF d = 5;\n"
+                           + "UPDATE %1$s SET d = 204 WHERE a = 20 AND b = 2 IF d = 6;\n"
+                           + "APPLY BATCH"),
+                   row(false));
     }
 
     @Test
@@ -1129,7 +1217,14 @@ public class InsertUpdateIfConditionTest extends CQLTester
         for (int i = 1; i <= 6; i++)
             execute("INSERT INTO %s (a, b) VALUES (?, ?)", i, i);
 
-        testConditionalUpdatesWithNonExistingOrNullValuesWithBatch();
+        // applied: null is indistiguishable from empty value, lwt condition is executed before INSERT
+        assertRows(execute("BEGIN BATCH\n"
+                           + "INSERT INTO %1$s (a, b, d) values (2, 2, 'a');\n"
+                           + "UPDATE %1$s SET s = 2 WHERE a = 2 IF s = null;\n"
+                           + "APPLY BATCH"),
+                   row(true));
+        assertRows(execute("SELECT * FROM %s WHERE a = 2"),
+                   row(2, 2, 2, "a"));
 
         // rejected: comparing number with null value always returns false
         for (String operator: new String[] { ">", "<", ">=", "<=", "="})
@@ -1138,20 +1233,36 @@ public class InsertUpdateIfConditionTest extends CQLTester
                                + "INSERT INTO %1$s (a, b, s, d) values (3, 3, 40, 'a');\n"
                                + "UPDATE %1$s SET s = 30 WHERE a = 3 IF s " + operator + " 5;\n"
                                + "APPLY BATCH"),
-                       row(false));
+                       row(false, 3, 3, null));
             assertRows(execute("SELECT * FROM %s WHERE a = 3"),
                        row(3, 3, null, null));
         }
 
+        // applied: lwt condition is executed before INSERT, update is applied after it
+        assertRows(execute("BEGIN BATCH\n"
+                           + "INSERT INTO %1$s (a, b, s, d) values (4, 4, 4, 'a');\n"
+                           + "UPDATE %1$s SET s = 5 WHERE a = 4 IF s = null;\n"
+                           + "APPLY BATCH"),
+                   row(true));
+        assertRows(execute("SELECT * FROM %s WHERE a = 4"),
+                   row(4, 4, 5, "a"));
+
+        assertRows(execute("BEGIN BATCH\n"
+                           + "INSERT INTO %1$s (a, b, s, d) values (5, 5, 5, 'a');\n"
+                           + "UPDATE %1$s SET s = 6 WHERE a = 5 IF s IN (1,2,null);\n"
+                           + "APPLY BATCH"),
+                   row(true));
+        assertRows(execute("SELECT * FROM %s WHERE a = 5"),
+                   row(5, 5, 6, "a"));
+
         // rejected: IN doesn't contain null
         assertRows(execute("BEGIN BATCH\n"
                            + "INSERT INTO %1$s (a, b, s, d) values (6, 6, 70, 'a');\n"
                            + "UPDATE %1$s SET s = 60 WHERE a = 6 IF s IN (1,2,3);\n"
                            + "APPLY BATCH"),
-                   row(false));
+                   row(false, 6, 6, null));
         assertRows(execute("SELECT * FROM %s WHERE a = 6"),
                    row(6, 6, null, null));
-
     }
 
     @Test
@@ -1159,31 +1270,6 @@ public class InsertUpdateIfConditionTest extends CQLTester
     {
         createTable("CREATE TABLE %s (a int, b int, s int static, d text, PRIMARY KEY (a, b))");
 
-        testConditionalUpdatesWithNonExistingOrNullValuesWithBatch();
-
-        // rejected: comparing number with non-existing value always returns false
-        for (String operator: new String[] { ">", "<", ">=", "<=", "="})
-        {
-            assertRows(execute("BEGIN BATCH\n"
-                               + "INSERT INTO %1$s (a, b, s, d) values (3, 3, 3, 'a');\n"
-                               + "UPDATE %1$s SET s = 3 WHERE a = 3 IF s " + operator + " 5;\n"
-                               + "APPLY BATCH"),
-                       row(false));
-            assertEmpty(execute("SELECT * FROM %s WHERE a = 3"));
-        }
-
-        // rejected: IN doesn't contain null
-        assertRows(execute("BEGIN BATCH\n"
-                           + "INSERT INTO %1$s (a, b, s, d) values (6, 6, 6, 'a');\n"
-                           + "UPDATE %1$s SET s = 7 WHERE a = 6 IF s IN (1,2,3);\n"
-                           + "APPLY BATCH"),
-                   row(false));
-        assertEmpty(execute("SELECT * FROM %s WHERE a = 6"));
-    }
-
-    private void testConditionalUpdatesWithNonExistingOrNullValuesWithBatch() throws Throwable
-    {
-        // applied: null is indistiguishable from empty value, lwt condition is executed before INSERT
         assertRows(execute("BEGIN BATCH\n"
                            + "INSERT INTO %1$s (a, b, d) values (2, 2, 'a');\n"
                            + "UPDATE %1$s SET s = 2 WHERE a = 2 IF s = null;\n"
@@ -1199,7 +1285,7 @@ public class InsertUpdateIfConditionTest extends CQLTester
                            + "APPLY BATCH"),
                    row(true));
         assertRows(execute("SELECT * FROM %s WHERE a = 4"),
-                   row(4, 4, 5, "a"));
+                   row(4, 4, 5, "a")); // Note that the update wins because 5 > 4 (we have a timestamp tie, so values are used)
 
         assertRows(execute("BEGIN BATCH\n"
                            + "INSERT INTO %1$s (a, b, s, d) values (5, 5, 5, 'a');\n"
@@ -1207,7 +1293,7 @@ public class InsertUpdateIfConditionTest extends CQLTester
                            + "APPLY BATCH"),
                    row(true));
         assertRows(execute("SELECT * FROM %s WHERE a = 5"),
-                   row(5, 5, 6, "a"));
+                   row(5, 5, 6, "a")); // Same as above
 
         assertRows(execute("BEGIN BATCH\n"
                            + "INSERT INTO %1$s (a, b, s, d) values (7, 7, 7, 'a');\n"
@@ -1215,7 +1301,26 @@ public class InsertUpdateIfConditionTest extends CQLTester
                            + "APPLY BATCH"),
                    row(true));
         assertRows(execute("SELECT * FROM %s WHERE a = 7"),
-                   row(7, 7, 8, "a"));
+                   row(7, 7, 8, "a")); // Same as above
+
+        // rejected: comparing number with non-existing value always returns false
+        for (String operator: new String[] { ">", "<", ">=", "<=", "="})
+        {
+            assertRows(execute("BEGIN BATCH\n"
+                               + "INSERT INTO %1$s (a, b, s, d) values (3, 3, 3, 'a');\n"
+                               + "UPDATE %1$s SET s = 3 WHERE a = 3 IF s " + operator + " 5;\n"
+                               + "APPLY BATCH"),
+                       row(false));
+            assertEmpty(execute("SELECT * FROM %s WHERE a = 3"));
+        }
+
+        // rejected: IN doesn't contain null
+        assertRows(execute("BEGIN BATCH\n"
+                           + "INSERT INTO %1$s (a, b, s, d) values (6, 6, 6, 'a');\n"
+                           + "UPDATE %1$s SET s = 7 WHERE a = 6 IF s IN (1,2,3);\n"
+                           + "APPLY BATCH"),
+                   row(false));
+        assertEmpty(execute("SELECT * FROM %s WHERE a = 6"));
     }
 
     @Test
@@ -1233,7 +1338,7 @@ public class InsertUpdateIfConditionTest extends CQLTester
 
         // rejected: IN doesn't contain null
         assertRows(execute("DELETE s1 FROM %s WHERE a = 2 IF s2 IN (10,20,30)"),
-                   row(false));
+                   row(false, null));
         assertRows(execute("SELECT * FROM %s WHERE a = 2"),
                    row(2, 2, 2, null, 2));
 
@@ -1251,7 +1356,7 @@ public class InsertUpdateIfConditionTest extends CQLTester
         for (String operator : new String[]{ ">", "<", ">=", "<=", "=" })
         {
             assertRows(execute("DELETE s1 FROM %s WHERE a = 5 IF s2 " + operator + " 3"),
-                       row(false));
+                       row(false, null));
             assertRows(execute("SELECT * FROM %s WHERE a = 5"),
                        row(5, 5, 5, null, 5));
         }
@@ -1262,7 +1367,6 @@ public class InsertUpdateIfConditionTest extends CQLTester
     {
         createTable("CREATE TABLE %s (a int, b int, s1 int static, s2 int static, v int, PRIMARY KEY (a, b))");
 
-        // applied: null is indistiguishable from empty value, lwt condition is executed before INSERT
         assertRows(execute("BEGIN BATCH\n"
                            + "INSERT INTO %1$s (a, b, s1, v) values (2, 2, 2, 2);\n"
                            + "DELETE s1 FROM %1$s WHERE a = 2 IF s2 = null;\n"
@@ -1290,6 +1394,7 @@ public class InsertUpdateIfConditionTest extends CQLTester
                    row(false));
         assertEmpty(execute("SELECT * FROM %s WHERE a = 6"));
 
+        // Note that on equal timestamp, tombstone wins so the DELETE wins
         assertRows(execute("BEGIN BATCH\n"
                            + "INSERT INTO %1$s (a, b, s1, v) values (4, 4, 4, 4);\n"
                            + "DELETE s1 FROM %1$s WHERE a = 4 IF s2 = null;\n"
@@ -1298,6 +1403,7 @@ public class InsertUpdateIfConditionTest extends CQLTester
         assertRows(execute("SELECT * FROM %s WHERE a = 4"),
                    row(4, 4, null, null, 4));
 
+        // Note that on equal timestamp, tombstone wins so the DELETE wins
         assertRows(execute("BEGIN BATCH\n"
                            + "INSERT INTO %1$s (a, b, s1, v) VALUES (5, 5, 5, 5);\n"
                            + "DELETE s1 FROM %1$s WHERE a = 5 IF s1 IN (1,2,null);\n"
@@ -1306,6 +1412,7 @@ public class InsertUpdateIfConditionTest extends CQLTester
         assertRows(execute("SELECT * FROM %s WHERE a = 5"),
                    row(5, 5, null, null, 5));
 
+        // Note that on equal timestamp, tombstone wins so the DELETE wins
         assertRows(execute("BEGIN BATCH\n"
                            + "INSERT INTO %1$s (a, b, s1, v) values (7, 7, 7, 7);\n"
                            + "DELETE s1 FROM %1$s WHERE a = 7 IF s2 != 7;\n"