[ https://issues.apache.org/jira/browse/HDFS-10816?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Kihwal Lee updated HDFS-10816: ------------------------------ Attachment: HDFS-10816.002.patch Reattaching the trunk patch. > TestComputeInvalidateWork#testDatanodeReRegistration fails due to race > between test and replication monitor > ----------------------------------------------------------------------------------------------------------- > > Key: HDFS-10816 > URL: https://issues.apache.org/jira/browse/HDFS-10816 > Project: Hadoop HDFS > Issue Type: Bug > Reporter: Eric Badger > Assignee: Eric Badger > Attachments: HDFS-10816.001.patch, HDFS-10816.002.patch, > HDFS-10816.002.patch, HDFS-10816-branch-2.002.patch > > > {noformat} > java.lang.AssertionError: Expected invalidate blocks to be the number of DNs > expected:<3> but was:<2> > 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.apache.hadoop.hdfs.server.blockmanagement.TestComputeInvalidateWork.testDatanodeReRegistration(TestComputeInvalidateWork.java:160) > {noformat} > The test fails because of a race condition between the test and the > replication monitor. The default replication monitor interval is 3 seconds, > which is just about how long the test normally takes to run. The test deletes > a file and then subsequently gets the namesystem writelock. However, if the > replication monitor fires in between those two instructions, the test will > fail as it will itself invalidate one of the blocks. This can be easily > reproduced by removing the sleep() in the ReplicationMonitor's run() method > in BlockManager.java, so that the replication monitor executes as quickly as > possible and exacerbates the race. > To fix the test all that needs to be done is to turn off the replication > monitor. -- This message was sent by Atlassian JIRA (v6.3.15#6346) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org