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https://issues.apache.org/jira/browse/HBASE-10142?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13849429#comment-13849429
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Andrew Purtell commented on HBASE-10142:
----------------------------------------
This doesn't manifest on reasonably endowed VMs. However, we see two instances
of different problems with this test on builds.apache.org.
>From the Hadoop 2 based build
>https://builds.apache.org/job/hbase-0.98/14/testReport/junit/org.apache.hadoop.hbase.regionserver.wal/TestLogRolling/testLogRollOnDatanodeDeath/:
{noformat}
java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor60.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.hadoop.hbase.regionserver.wal.FSHLog.getLogReplication(FSHLog.java:1391)
at
org.apache.hadoop.hbase.regionserver.wal.TestLogRolling.testLogRollOnDatanodeDeath(TestLogRolling.java:400)
[...]
Caused by: java.nio.channels.ClosedChannelException
at
org.apache.hadoop.hdfs.DFSOutputStream.checkClosed(DFSOutputStream.java:1317)
at
org.apache.hadoop.hdfs.DFSOutputStream.getCurrentBlockReplication(DFSOutputStream.java:1762)
at
org.apache.hadoop.hdfs.DFSOutputStream.getNumCurrentReplicas(DFSOutputStream.java:1751)
{noformat}
And from the Hadoop 1 based build
https://builds.apache.org/job/hbase-0.98-on-hadoop-1.1/10/testReport/junit/org.apache.hadoop.hbase.regionserver.wal/TestLogRolling/testLogRollOnDatanodeDeath/:
{noformat}
java.lang.AssertionError: Missing datanode should've triggered a log roll
at org.junit.Assert.fail(Assert.java:88)
at org.junit.Assert.assertTrue(Assert.java:41)
at
org.apache.hadoop.hbase.regionserver.wal.TestLogRolling.testLogRollOnDatanodeDeath(TestLogRolling.java:388)
{noformat}
So I am strongly inclined to disable this test as a flapper.
> TestLogRolling#testLogRollOnDatanodeDeath test failure
> ------------------------------------------------------
>
> Key: HBASE-10142
> URL: https://issues.apache.org/jira/browse/HBASE-10142
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.98.0, 0.99.0
> Reporter: Andrew Purtell
> Fix For: 0.98.0
>
>
> This is a demanding unit test, which fails fairly often as software versions
> (JVM, Hadoop) and system load change. Currently when testing 0.98 branch I
> see this failure:
> {noformat}
> Failed tests:
> testLogRollOnDatanodeDeath(org.apache.hadoop.hbase.regionserver.wal.TestLogRolling):
> LowReplication Roller should've been disabled, current replication=1
> {noformat}
> Could be a timing issue after the recent switch to Hadoop 2 as default
> build/test profile. Let's see if more leniency makes sense and if it can
> stabilize the test before disabling it.
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