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Wei-Chiu Chuang commented on HDFS-9466: --------------------------------------- Assigning this JIRA to me. I found it is due to race condition. The test checks the number of slots before the slots are removed. > TestShortCircuitCache#testDataXceiverCleansUpSlotsOnFailure is flaky > -------------------------------------------------------------------- > > Key: HDFS-9466 > URL: https://issues.apache.org/jira/browse/HDFS-9466 > Project: Hadoop HDFS > Issue Type: Bug > Components: fs, hdfs-client > Reporter: Wei-Chiu Chuang > Assignee: Wei-Chiu Chuang > > This test is flaky and fails quite frequently in trunk. > Error Message > expected:<1> but was:<2> > Stacktrace > {noformat} > java.lang.AssertionError: expected:<1> 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.junit.Assert.assertEquals(Assert.java:542) > at > org.apache.hadoop.hdfs.shortcircuit.TestShortCircuitCache$17.accept(TestShortCircuitCache.java:636) > at > org.apache.hadoop.hdfs.server.datanode.ShortCircuitRegistry.visit(ShortCircuitRegistry.java:395) > at > org.apache.hadoop.hdfs.shortcircuit.TestShortCircuitCache.checkNumberOfSegmentsAndSlots(TestShortCircuitCache.java:631) > at > org.apache.hadoop.hdfs.shortcircuit.TestShortCircuitCache.testDataXceiverCleansUpSlotsOnFailure(TestShortCircuitCache.java:684) > {noformat} > Thanks to [~xiaochen] for identifying the issue. -- This message was sent by Atlassian JIRA (v6.3.4#6332)