com.thinkaurelius.titan.graphdb

Class TitanGraphConcurrentTest

java.lang.Object

com.thinkaurelius.titan.graphdb.TitanGraphBaseTest

com.thinkaurelius.titan.graphdb.TitanGraphConcurrentTest

public abstract class TitanGraphConcurrentTest
extends TitanGraphBaseTest

High concurrency test cases to spot deadlocks and other failures that can occur under high degrees of parallelism.

Nested Class Summary

Nested classes/interfaces inherited from class com.thinkaurelius.titan.graphdb.TitanGraphBaseTest

TitanGraphBaseTest.TestConfigOption

Field Summary

Fields

Modifier and Type	Field and Description
org.junit.rules.TestRule	benchmark

Fields inherited from class com.thinkaurelius.titan.graphdb.TitanGraphBaseTest

adjustedConfig, config, DEFAULT_THREAD_COUNT, features, graph, logManagers, mgmt, tx

Constructor Summary

Constructors

Constructor and Description
TitanGraphConcurrentTest()

Method Summary

Modifier and Type	Method and Description
void	concurrentIndexReadWriteTest()
void	concurrentReadsOnSingleTransaction() Insert an extremely simple graph and start TASK_COUNT simultaneous readers in an executor with THREAD_COUNT threads.
void	concurrentReadWriteOnSingleTransaction() Tail many readers, as in concurrentReadsOnSingleTransaction(), but also start some threads that add and remove relationships and properties while the readers are working; all tasks share a common transaction.
void	concurrentTxRead()
void	setUp()
void	tearDown()
void	testStandardIndexVertexPropertyReads() Load-then-read test of standard-indexed vertex properties.

Methods inherited from class com.thinkaurelius.titan.graphdb.TitanGraphBaseTest

clopen, close, closeLogManager, createExternalEdgeIndex, createExternalVertexIndex, finishSchema, getConfig, getConfiguration, getExternalIndex, getThreadCount, getVertex, getVertex, getVertex, getVertex, makeKey, makeKeyedEdgeLabel, makeLabel, makeVertexIndexedKey, makeVertexIndexedUniqueKey, newTx, open, openTxLog, openUserLog, option, round, wrapAround

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

benchmark

public org.junit.rules.TestRule benchmark

Constructor Detail

TitanGraphConcurrentTest

public TitanGraphConcurrentTest()

Method Detail

setUp

public void setUp()
           throws Exception

Overrides:

setUp in class TitanGraphBaseTest

Throws:

Exception

tearDown

public void tearDown()
              throws Exception

Overrides:

tearDown in class TitanGraphBaseTest

Throws:

Exception

concurrentTxRead

public void concurrentTxRead()
                      throws Exception

Throws:

Exception

concurrentReadsOnSingleTransaction

public void concurrentReadsOnSingleTransaction()
                                        throws Exception

Insert an extremely simple graph and start TASK_COUNT simultaneous readers in an executor with THREAD_COUNT threads.

Throws:

Exception

concurrentReadWriteOnSingleTransaction

public void concurrentReadWriteOnSingleTransaction()
                                            throws Exception

Tail many readers, as in concurrentReadsOnSingleTransaction(), but also start some threads that add and remove relationships and properties while the readers are working; all tasks share a common transaction.

The readers do not look for the properties or relationships the writers are mutating, since this is all happening on a common transaction.

Throws:

Exception

concurrentIndexReadWriteTest

public void concurrentIndexReadWriteTest()
                                  throws Exception

Throws:

Exception

testStandardIndexVertexPropertyReads

public void testStandardIndexVertexPropertyReads()
                                          throws InterruptedException,
                                                 ExecutionException

Load-then-read test of standard-indexed vertex properties. This test contains no edges.

The load stage is serial. The read stage is concurrent.

Create a set of vertex property types with standard indices (threadPoolSize * 5 by default) serially. Serially write 1k vertices with values for all of the indexed property types. Concurrently query the properties. Each thread uses a single, distinct transaction for all index retrievals in that thread.

Throws:

ExecutionException

InterruptedException