Yiqun Lin created HDFS-10426:
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Summary: TestPendingInvalidateBlock failed in trunk
Key: HDFS-10426
URL: https://issues.apache.org/jira/browse/HDFS-10426
Project: Hadoop HDFS
Issue Type: Bug
Components: test
Reporter: Yiqun Lin
Assignee: Yiqun Lin
The test {{TestPendingInvalidateBlock}} failed sometimes. The stack info:
{code}
org.apache.hadoop.hdfs.server.blockmanagement.TestPendingInvalidateBlock
testPendingDeletion(org.apache.hadoop.hdfs.server.blockmanagement.TestPendingInvalidateBlock)
Time elapsed: 7.703 sec <<< FAILURE!
java.lang.AssertionError: expected:<2> but was:<1>
at org.junit.Assert.fail(Assert.java:88)
at org.junit.Assert.failNotEquals(Assert.java:743)
at org.junit.Assert.assertEquals(Assert.java:118)
at org.junit.Assert.assertEquals(Assert.java:555)
at org.junit.Assert.assertEquals(Assert.java:542)
at
org.apache.hadoop.hdfs.server.blockmanagement.TestPendingInvalidateBlock.testPendingDeletion(TestPendingInvalidateBlock.java:92)
{code}
It looks that the {{invalidateBlock}} has been removed before we do the check
{code}
// restart NN
cluster.restartNameNode(true);
dfs.delete(foo, true);
Assert.assertEquals(0, cluster.getNamesystem().getBlocksTotal());
Assert.assertEquals(REPLICATION, cluster.getNamesystem()
.getPendingDeletionBlocks());
Assert.assertEquals(REPLICATION,
dfs.getPendingDeletionBlocksCount());
{code}
And I look into the related configurations. I found the property
{{dfs.namenode.replication.interval}} was just set as 1 second in this test.
And after the delay time of {{dfs.namenode.startup.delay.block.deletion.sec}}
and the delete operation was slowly, it will cause this case. We can see the
stack info before, the failed test costs 7.7s more than 5+1 second.
Two methods will improve this.
* Increase the time of {{dfs.namenode.startup.delay.block.deletion.sec}}
* Increase the time of {{dfs.namenode.replication.interval}}
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