org.apache.hadoop.hbase.mttr

Class IntegrationTestMTTR

java.lang.Object

org.apache.hadoop.hbase.mttr.IntegrationTestMTTR

public class IntegrationTestMTTR
extends Object

Integration test that should benchmark how fast HBase can recover from failures. This test starts different threads:

1. Load Test Tool.
   This runs so that all RegionServers will have some load and WALs will be full.
2. Scan thread.
   This thread runs a very short scan over and over again recording how log it takes to respond. The longest response is assumed to be the time it took to recover.
3. Put thread.
   This thread just like the scan thread except it does a very small put.
4. Admin thread.
   This thread will continually go to the master to try and get the cluster status. Just like the put and scan threads, the time to respond is recorded.
5. Chaos Monkey thread.
   This thread runs a ChaosMonkey.Action.

The ChaosMonkey actions currently run are:

• Restart the RegionServer holding meta.
• Move the Regions of meta.
• Restart the RegionServer holding the table the scan and put threads are targeting.
• Move the Regions of the table used by the scan and put threads.
• Restart the master.

At the end of the test a log line is output on the INFO level containing the timing data that was collected.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	IntegrationTestMTTR.LoadCallable Callable used to make sure the cluster has some load on it.

Constructor Summary

Constructors

Constructor and Description
IntegrationTestMTTR()

Method Summary

Modifier and Type	Method and Description
static void	after()
void	run(Callable<Boolean> monkeyCallable, String testName)
static void	setUp()
void	testKillRsHoldingMeta()
void	testMoveMeta()
void	testMoveRegion()
void	testRestartMaster()
void	testRestartRsHoldingTable()

Methods inherited from class java.lang.Object

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

Constructor Detail

IntegrationTestMTTR

public IntegrationTestMTTR()

Method Detail

setUp

public static void setUp()
                  throws Exception

Throws:

Exception

after

public static void after()
                  throws IOException

Throws:

IOException

testRestartRsHoldingTable

public void testRestartRsHoldingTable()
                               throws Exception

Throws:

Exception

testKillRsHoldingMeta

public void testKillRsHoldingMeta()
                           throws Exception

Throws:

Exception

testMoveMeta

public void testMoveMeta()
                  throws Exception

Throws:

Exception

testMoveRegion

public void testMoveRegion()
                    throws Exception

Throws:

Exception

testRestartMaster

public void testRestartMaster()
                       throws Exception

Throws:

Exception

run

public void run(Callable<Boolean> monkeyCallable,
                String testName)
         throws Exception

Throws:

Exception