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One way to run a test a lot of times is to add a new method to your case test that runs a problematic method many times. Here's an example

 

Code Block

  public void testLoop() throws Exception {
    for(int i=0; i < 200; i++) {
      testGetBucketOwners();
      tearDown();
      setUp();
    }
  }

...

Code Block
  public void testClientPutWithInterrupt() throws Throwable {
    addExpectedException("InterruptedException");
   //...
  }

 

Turn on debug level in dunit tests

There're many ways to run a test case with debug level, the easiest way is to add following code into the test program temporarily.

 

Code Block
  @Override
  public Properties getDistributedSystemProperties() {
    Properties props = new Properties();
    props.setProperty("log-level", "debug");
    return props;
  }

 

Turn on trace level using log4j2.xml

There're some trace code in product code like following: 

 

Code Block
      if (logger.isTraceEnabled(LogMarker.TOMBSTONE)) {
        logger.trace(LogMarker.TOMBSTONE, "Destroyed entries sweeper starting with default sleep interval={}", this.expiryTime);
      }

They will not be displayed in debug level log. To specify a customized log4j2.xml, there're also several ways, but the easiest one is to copy your log4j2.xml into open/gemfire-core/src/main/resources/log4j2.xml. Here is an example of log4j2.xml which turned on LogMarker.TOMBSTONE, LogMarker.DISTRIBUTION, LogMarker.DISK_STORE_MONITOR:

 

Code Block
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="ERROR" shutdownHook="disable" packages="com.gemstone.gemfire.internal.logging.log4j">
  <Properties>
    <Property name="gemfire-pattern">[%level{lowerCase=true} %date{yyyy/MM/dd HH:mm:ss.SSS z} &lt;%thread&gt; tid=%tid] %message%n%throwable%n</Property>
  </Properties>
  <filters>
    <MarkerFilter marker="DISTRIBUTION" onMatch="ACCEPT" onMismatch="NEUTRAL"/>
    <MarkerFilter marker="DISK_STORE_MONITOR" onMatch="ACCEPT" onMismatch="NEUTRAL"/>
    <MarkerFilter marker="TOMBSTONE" onMatch="ACCEPT" onMismatch="NEUTRAL"/>
    <!--MarkerFilter marker="PERSIST_RECOVERY" onMatch="ACCEPT" onMismatch="NEUTRAL"/-->
    <!--MarkerFilter marker="PERSIST_WRITES" onMatch="ACCEPT" onMismatch="NEUTRAL"/-->
    <!-- have to explicitly DENY all the markers' log, then explicitly add back one by one -->
    <MarkerFilter marker="GEMFIRE_MARKER" onMatch="DENY" onMismatch="NEUTRAL"/>
  </filters>
  <Appenders>
    <Console name="STDOUT" target="SYSTEM_OUT">
      <PatternLayout pattern="${gemfire-pattern}"/>
    </Console>
    <Console name="STDERR" target="SYSTEM_ERR">
      <PatternLayout pattern="${gemfire-pattern}"/>
    </Console>
    <!--RollingFile name="RollingFile" fileName="${filename}"-->
    <File name="Log" fileName="system.log" bufferedIO="true">
      <PatternLayout pattern="${gemfire-pattern}"/>
    </File>
  </Appenders>
  <Loggers>
    <Logger name="com.gemstone" level="INFO" additivity="false">
      <AppenderRef ref="Log"/>
    </Logger>
    <Logger name="com.gemstone.gemfire.distributed.internal" level="TRACE" additivity="false">
      <AppenderRef ref="STDOUT" level="DEBUG"/>
    </Logger>
    <Logger name="com.gemstone.gemfire.cache.client.internal" level="TRACE" additivity="false">
      <AppenderRef ref="STDOUT" level="DEBUG"/>
    </Logger>
    <Logger name="com.gemstone.gemfire.internal.cache" level="TRACE" additivity="false">
      <AppenderRef ref="STDOUT" level="TRACE"/>
    </Logger>
    <!--Logger name="com.gemstone.gemfire.distributed.internal.DistributionManager" level="TRACE" additivity="false">
      <AppenderRef ref="Log" level="DEBUG"/>
    </Logger-->
    <!--Logger name="com.gemstone.gemfire.distributed.internal.DistributionMessage" level="TRACE" additivity="false">
      <AppenderRef ref="Log" level="DEBUG"/>
    </Logger-->
    <Root level="ERROR">
      <!--AppenderRef ref="STDOUT"/-->
    </Root>
  </Loggers>
</Configuration>