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From "dhruba borthakur (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-1456) TestDecommission fails with assertion Number of replicas for block1 expected:<3> but was:<2>
Date Sat, 02 Jun 2007 05:19:16 GMT
TestDecommission fails with assertion  Number of replicas for block1 expected:<3> but
was:<2>
---------------------------------------------------------------------------------------------

                 Key: HADOOP-1456
                 URL: https://issues.apache.org/jira/browse/HADOOP-1456
             Project: Hadoop
          Issue Type: Bug
          Components: dfs
            Reporter: dhruba borthakur
            Assignee: dhruba borthakur


TestDecommission fails sometimes with the following assertion:

junit.framework.AssertionFailedError: Number of replicas for block1 expected:<3> but
was:<2>
	at org.apache.hadoop.dfs.TestDecommission.checkFile(TestDecommission.java:89)
	at org.apache.hadoop.dfs.TestDecommission.testDecommission(TestDecommission.java:285)

More logs here: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/231/testReport/org.apache.hadoop.dfs/TestDecommission/testDecommission/

This test creates a file with target replication factor of 3. Then it verifies that the file
actually has a replciation of 3. I think the test should set "dfs.replication.considerLoad"
to false before starting the test so that the namenode ignores the load on datanodes while
allocating replicas. This is the approach folowed by TestReplication.


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