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https://issues.apache.org/jira/browse/HDFS-827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13014861#comment-13014861
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Konstantin Boudnik commented on HDFS-827:
-----------------------------------------
Todd, the change in
{{src/java/org/apache/hadoop/hdfs/server/datanode/ReplicaInPipeline.java}}
{noformat}
+ int bytesPerChunk = checksum.getBytesPerChecksum();
+ int checksumSize = checksum.getChecksumSize();
{noformat}
causes NPE if DataChecksum.newDataChecksum
> Additional unit tests for FSDataset
> -----------------------------------
>
> Key: HDFS-827
> URL: https://issues.apache.org/jira/browse/HDFS-827
> Project: Hadoop HDFS
> Issue Type: Test
> Components: data-node, test
> Affects Versions: 0.22.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Attachments: hdfs-827.txt
>
>
> FSDataset doesn't currently have a unit-test that tests it in isolation of
> the DN or a cluster. A test specifically for this class will be helpful for
> developing HDFS-788
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