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https://issues.apache.org/jira/browse/HADOOP-2201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12542301
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Raghu Angadi commented on HADOOP-2201:
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There are probably multiple issues :
# {{DFSTestUtil.waitReplication()}} does not actually wait, since HADOOP-1912
# Not sure why namenode could not find enough datanodes to replicate the blocks
: {noformat}
2007-11-13 22:08:40,726 INFO dfs.StateChange
(FSNamesystem.java:allocateBlock(1153)) -
BLOCK* NameSystem.allocateBlock: /srcdat/four/3008492280703278769.
blk_-2520229948653068441
2007-11-13 22:08:40,727 WARN fs.FSNamesystem
(ReplicationTargetChooser.java:chooseTarget(177)) -
Not able to place enough replicas, still in need of 1
{noformat}
I will submit a patch for (1) separately.
> TestCrcCorruption sometimes fails
> ---------------------------------
>
> Key: HADOOP-2201
> URL: https://issues.apache.org/jira/browse/HADOOP-2201
> Project: Hadoop
> Issue Type: Bug
> Components: dfs
> Reporter: Doug Cutting
> Attachments: TEST-org.apache.hadoop.dfs.TestCrcCorruption.txt
>
>
> In current trunk, I'm seeing TestCrcCorruption fail about one in four times.
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