Repository: cassandra Updated Branches: refs/heads/cassandra-2.0 fe39eb7a9 -> e4d5edae7
Don't send schema change msg for no-op DDL stmts Patch by Tyler Hobbs; review by Mikhail Stepura for CASSANDRA-7600 Project: http://git-wip-us.apache.org/repos/asf/cassandra/repo Commit: http://git-wip-us.apache.org/repos/asf/cassandra/commit/e4d5edae Tree: http://git-wip-us.apache.org/repos/asf/cassandra/tree/e4d5edae Diff: http://git-wip-us.apache.org/repos/asf/cassandra/diff/e4d5edae Branch: refs/heads/cassandra-2.0 Commit: e4d5edae72838533445efadc001d2b6b656fd0ce Parents: fe39eb7 Author: Tyler Hobbs <ty...@datastax.com> Authored: Thu Aug 21 14:18:40 2014 -0500 Committer: Tyler Hobbs <ty...@datastax.com> Committed: Thu Aug 21 14:20:15 2014 -0500 ---------------------------------------------------------------------- CHANGES.txt | 2 ++ .../cql3/statements/AlterKeyspaceStatement.java | 3 ++- .../cql3/statements/AlterTableStatement.java | 3 ++- .../cql3/statements/CreateIndexStatement.java | 5 +++-- .../cql3/statements/CreateKeyspaceStatement.java | 8 +++++--- .../cql3/statements/CreateTableStatement.java | 10 ++++++---- .../cql3/statements/CreateTriggerStatement.java | 3 ++- .../cql3/statements/DropIndexStatement.java | 5 +++-- .../cql3/statements/DropKeyspaceStatement.java | 8 +++++--- .../cql3/statements/DropTableStatement.java | 8 +++++--- .../cql3/statements/DropTriggerStatement.java | 3 ++- .../cql3/statements/SchemaAlteringStatement.java | 15 +++++++++++++-- 12 files changed, 50 insertions(+), 23 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/cassandra/blob/e4d5edae/CHANGES.txt ---------------------------------------------------------------------- diff --git a/CHANGES.txt b/CHANGES.txt index 71cfca0..9aeeb29 100644 --- a/CHANGES.txt +++ b/CHANGES.txt @@ -1,4 +1,6 @@ 2.0.10 + * Don't send schema change responses and events for no-op DDL + statements (CASSANDRA-7600) * (Hadoop) fix cluster initialisation for a split fetching (CASSANDRA-7774) * Configure system.paxos with LeveledCompactionStrategy (CASSANDRA-7753) * Fix ALTER clustering column type from DateType to TimestampType when http://git-wip-us.apache.org/repos/asf/cassandra/blob/e4d5edae/src/java/org/apache/cassandra/cql3/statements/AlterKeyspaceStatement.java ---------------------------------------------------------------------- diff --git a/src/java/org/apache/cassandra/cql3/statements/AlterKeyspaceStatement.java b/src/java/org/apache/cassandra/cql3/statements/AlterKeyspaceStatement.java index 39d1cde..4f6d1f2 100644 --- a/src/java/org/apache/cassandra/cql3/statements/AlterKeyspaceStatement.java +++ b/src/java/org/apache/cassandra/cql3/statements/AlterKeyspaceStatement.java @@ -79,7 +79,7 @@ public class AlterKeyspaceStatement extends SchemaAlteringStatement } } - public void announceMigration() throws RequestValidationException + public boolean announceMigration() throws RequestValidationException { KSMetaData ksm = Schema.instance.getKSMetaData(name); // In the (very) unlikely case the keyspace was dropped since validate() @@ -87,6 +87,7 @@ public class AlterKeyspaceStatement extends SchemaAlteringStatement throw new InvalidRequestException("Unknown keyspace " + name); MigrationManager.announceKeyspaceUpdate(attrs.asKSMetadataUpdate(ksm)); + return true; } public ResultMessage.SchemaChange.Change changeType() http://git-wip-us.apache.org/repos/asf/cassandra/blob/e4d5edae/src/java/org/apache/cassandra/cql3/statements/AlterTableStatement.java ---------------------------------------------------------------------- diff --git a/src/java/org/apache/cassandra/cql3/statements/AlterTableStatement.java b/src/java/org/apache/cassandra/cql3/statements/AlterTableStatement.java index 136c430..dfcd601 100644 --- a/src/java/org/apache/cassandra/cql3/statements/AlterTableStatement.java +++ b/src/java/org/apache/cassandra/cql3/statements/AlterTableStatement.java @@ -76,7 +76,7 @@ public class AlterTableStatement extends SchemaAlteringStatement // validated in announceMigration() } - public void announceMigration() throws RequestValidationException + public boolean announceMigration() throws RequestValidationException { CFMetaData meta = validateColumnFamily(keyspace(), columnFamily()); CFMetaData cfm = meta.clone(); @@ -266,6 +266,7 @@ public class AlterTableStatement extends SchemaAlteringStatement } MigrationManager.announceColumnFamilyUpdate(cfm, false); + return true; } public String toString() http://git-wip-us.apache.org/repos/asf/cassandra/blob/e4d5edae/src/java/org/apache/cassandra/cql3/statements/CreateIndexStatement.java ---------------------------------------------------------------------- diff --git a/src/java/org/apache/cassandra/cql3/statements/CreateIndexStatement.java b/src/java/org/apache/cassandra/cql3/statements/CreateIndexStatement.java index 376fa4a..8b40978 100644 --- a/src/java/org/apache/cassandra/cql3/statements/CreateIndexStatement.java +++ b/src/java/org/apache/cassandra/cql3/statements/CreateIndexStatement.java @@ -103,14 +103,14 @@ public class CreateIndexStatement extends SchemaAlteringStatement throw new InvalidRequestException(String.format("Cannot add secondary index to already primarily indexed column %s", columnName)); } - public void announceMigration() throws RequestValidationException + public boolean announceMigration() throws RequestValidationException { logger.debug("Updating column {} definition for index {}", columnName, indexName); CFMetaData cfm = Schema.instance.getCFMetaData(keyspace(), columnFamily()).clone(); ColumnDefinition cd = cfm.getColumnDefinition(columnName.key); if (cd.getIndexType() != null && ifNotExists) - return; + return false; if (properties.isCustom) cd.setIndexType(IndexType.CUSTOM, properties.getOptions()); @@ -122,6 +122,7 @@ public class CreateIndexStatement extends SchemaAlteringStatement cd.setIndexName(indexName); cfm.addDefaultIndexNames(); MigrationManager.announceColumnFamilyUpdate(cfm, false); + return true; } public ResultMessage.SchemaChange.Change changeType() http://git-wip-us.apache.org/repos/asf/cassandra/blob/e4d5edae/src/java/org/apache/cassandra/cql3/statements/CreateKeyspaceStatement.java ---------------------------------------------------------------------- diff --git a/src/java/org/apache/cassandra/cql3/statements/CreateKeyspaceStatement.java b/src/java/org/apache/cassandra/cql3/statements/CreateKeyspaceStatement.java index 2ed1d91..7a8473a 100644 --- a/src/java/org/apache/cassandra/cql3/statements/CreateKeyspaceStatement.java +++ b/src/java/org/apache/cassandra/cql3/statements/CreateKeyspaceStatement.java @@ -97,16 +97,18 @@ public class CreateKeyspaceStatement extends SchemaAlteringStatement attrs.getReplicationOptions()); } - public void announceMigration() throws RequestValidationException + public boolean announceMigration() throws RequestValidationException { try { MigrationManager.announceNewKeyspace(attrs.asKSMetadata(name)); + return true; } catch (AlreadyExistsException e) { - if (!ifNotExists) - throw e; + if (ifNotExists) + return false; + throw e; } } http://git-wip-us.apache.org/repos/asf/cassandra/blob/e4d5edae/src/java/org/apache/cassandra/cql3/statements/CreateTableStatement.java ---------------------------------------------------------------------- diff --git a/src/java/org/apache/cassandra/cql3/statements/CreateTableStatement.java b/src/java/org/apache/cassandra/cql3/statements/CreateTableStatement.java index 08ad069..b7f43d3 100644 --- a/src/java/org/apache/cassandra/cql3/statements/CreateTableStatement.java +++ b/src/java/org/apache/cassandra/cql3/statements/CreateTableStatement.java @@ -114,16 +114,18 @@ public class CreateTableStatement extends SchemaAlteringStatement return columnDefs; } - public void announceMigration() throws RequestValidationException + public boolean announceMigration() throws RequestValidationException { try { - MigrationManager.announceNewColumnFamily(getCFMetaData()); + MigrationManager.announceNewColumnFamily(getCFMetaData()); + return true; } catch (AlreadyExistsException e) { - if (!ifNotExists) - throw e; + if (ifNotExists) + return false; + throw e; } } http://git-wip-us.apache.org/repos/asf/cassandra/blob/e4d5edae/src/java/org/apache/cassandra/cql3/statements/CreateTriggerStatement.java ---------------------------------------------------------------------- diff --git a/src/java/org/apache/cassandra/cql3/statements/CreateTriggerStatement.java b/src/java/org/apache/cassandra/cql3/statements/CreateTriggerStatement.java index 760d870..70b3acb 100644 --- a/src/java/org/apache/cassandra/cql3/statements/CreateTriggerStatement.java +++ b/src/java/org/apache/cassandra/cql3/statements/CreateTriggerStatement.java @@ -65,12 +65,13 @@ public class CreateTriggerStatement extends SchemaAlteringStatement } } - public void announceMigration() throws ConfigurationException + public boolean announceMigration() throws ConfigurationException { CFMetaData cfm = Schema.instance.getCFMetaData(keyspace(), columnFamily()).clone(); cfm.addTriggerDefinition(TriggerDefinition.create(triggerName, triggerClass)); logger.info("Adding trigger with name {} and class {}", triggerName, triggerClass); MigrationManager.announceColumnFamilyUpdate(cfm, false); + return true; } public ResultMessage.SchemaChange.Change changeType() http://git-wip-us.apache.org/repos/asf/cassandra/blob/e4d5edae/src/java/org/apache/cassandra/cql3/statements/DropIndexStatement.java ---------------------------------------------------------------------- diff --git a/src/java/org/apache/cassandra/cql3/statements/DropIndexStatement.java b/src/java/org/apache/cassandra/cql3/statements/DropIndexStatement.java index c62ad47..ac5262e 100644 --- a/src/java/org/apache/cassandra/cql3/statements/DropIndexStatement.java +++ b/src/java/org/apache/cassandra/cql3/statements/DropIndexStatement.java @@ -60,14 +60,15 @@ public class DropIndexStatement extends SchemaAlteringStatement return ResultMessage.SchemaChange.Change.UPDATED; } - public void announceMigration() throws InvalidRequestException, ConfigurationException + public boolean announceMigration() throws InvalidRequestException, ConfigurationException { CFMetaData cfm = findIndexedCF(); if (cfm == null) - return; + return false; CFMetaData updatedCfm = updateCFMetadata(cfm); MigrationManager.announceColumnFamilyUpdate(updatedCfm, false); + return true; } private CFMetaData updateCFMetadata(CFMetaData cfm) http://git-wip-us.apache.org/repos/asf/cassandra/blob/e4d5edae/src/java/org/apache/cassandra/cql3/statements/DropKeyspaceStatement.java ---------------------------------------------------------------------- diff --git a/src/java/org/apache/cassandra/cql3/statements/DropKeyspaceStatement.java b/src/java/org/apache/cassandra/cql3/statements/DropKeyspaceStatement.java index 30fd964..7582af0 100644 --- a/src/java/org/apache/cassandra/cql3/statements/DropKeyspaceStatement.java +++ b/src/java/org/apache/cassandra/cql3/statements/DropKeyspaceStatement.java @@ -55,16 +55,18 @@ public class DropKeyspaceStatement extends SchemaAlteringStatement return keyspace; } - public void announceMigration() throws ConfigurationException + public boolean announceMigration() throws ConfigurationException { try { MigrationManager.announceKeyspaceDrop(keyspace); + return true; } catch(ConfigurationException e) { - if (!ifExists) - throw e; + if (ifExists) + return false; + throw e; } } http://git-wip-us.apache.org/repos/asf/cassandra/blob/e4d5edae/src/java/org/apache/cassandra/cql3/statements/DropTableStatement.java ---------------------------------------------------------------------- diff --git a/src/java/org/apache/cassandra/cql3/statements/DropTableStatement.java b/src/java/org/apache/cassandra/cql3/statements/DropTableStatement.java index d27261c..65a3f14 100644 --- a/src/java/org/apache/cassandra/cql3/statements/DropTableStatement.java +++ b/src/java/org/apache/cassandra/cql3/statements/DropTableStatement.java @@ -54,16 +54,18 @@ public class DropTableStatement extends SchemaAlteringStatement // validated in announceMigration() } - public void announceMigration() throws ConfigurationException + public boolean announceMigration() throws ConfigurationException { try { MigrationManager.announceColumnFamilyDrop(keyspace(), columnFamily()); + return true; } catch (ConfigurationException e) { - if (!ifExists) - throw e; + if (ifExists) + return false; + throw e; } } http://git-wip-us.apache.org/repos/asf/cassandra/blob/e4d5edae/src/java/org/apache/cassandra/cql3/statements/DropTriggerStatement.java ---------------------------------------------------------------------- diff --git a/src/java/org/apache/cassandra/cql3/statements/DropTriggerStatement.java b/src/java/org/apache/cassandra/cql3/statements/DropTriggerStatement.java index ce17047..f0bd637 100644 --- a/src/java/org/apache/cassandra/cql3/statements/DropTriggerStatement.java +++ b/src/java/org/apache/cassandra/cql3/statements/DropTriggerStatement.java @@ -53,13 +53,14 @@ public class DropTriggerStatement extends SchemaAlteringStatement ThriftValidation.validateColumnFamily(keyspace(), columnFamily()); } - public void announceMigration() throws ConfigurationException + public boolean announceMigration() throws ConfigurationException { CFMetaData cfm = Schema.instance.getCFMetaData(keyspace(), columnFamily()).clone(); if (!cfm.removeTrigger(triggerName)) throw new ConfigurationException(String.format("Trigger %s was not found", triggerName)); logger.info("Dropping trigger with name {}", triggerName); MigrationManager.announceColumnFamilyUpdate(cfm, false); + return true; } public ResultMessage.SchemaChange.Change changeType() http://git-wip-us.apache.org/repos/asf/cassandra/blob/e4d5edae/src/java/org/apache/cassandra/cql3/statements/SchemaAlteringStatement.java ---------------------------------------------------------------------- diff --git a/src/java/org/apache/cassandra/cql3/statements/SchemaAlteringStatement.java b/src/java/org/apache/cassandra/cql3/statements/SchemaAlteringStatement.java index 94df854..845d8cc 100644 --- a/src/java/org/apache/cassandra/cql3/statements/SchemaAlteringStatement.java +++ b/src/java/org/apache/cassandra/cql3/statements/SchemaAlteringStatement.java @@ -64,11 +64,22 @@ public abstract class SchemaAlteringStatement extends CFStatement implements CQL public abstract ResultMessage.SchemaChange.Change changeType(); - public abstract void announceMigration() throws RequestValidationException; + /** + * Announces the migration to other nodes in the cluster. + * @return true if the execution of this statement resulted in a schema change, false otherwise (when IF NOT EXISTS + * is used, for example) + * @throws RequestValidationException + */ + public abstract boolean announceMigration() throws RequestValidationException; public ResultMessage execute(QueryState state, QueryOptions options) throws RequestValidationException { - announceMigration(); + // If an IF [NOT] EXISTS clause was used, this may not result in an actual schema change. To avoid doing + // extra work in the drivers to handle schema changes, we return an empty message in this case. (CASSANDRA-7600) + boolean didChangeSchema = announceMigration(); + if (!didChangeSchema) + return new ResultMessage.Void(); + String tableName = cfName == null || columnFamily() == null ? "" : columnFamily(); return new ResultMessage.SchemaChange(changeType(), keyspace(), tableName); }
