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https://issues.apache.org/jira/browse/HADOOP-1696?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12521627
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Raghu Angadi commented on HADOOP-1696:
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Filed HADOOP-1749 for the second issue. Linked it with HADOOP-1601.
> NPE in TestDistributedUpgrade
> -----------------------------
>
> Key: HADOOP-1696
> URL: https://issues.apache.org/jira/browse/HADOOP-1696
> Project: Hadoop
> Issue Type: Bug
> Components: dfs
> Reporter: dhruba borthakur
> Assignee: Raghu Angadi
> Fix For: 0.15.0
>
> Attachments: sortFiles.patch
>
>
> The TestDistributedUpgrade test fails once a while with the following stack
> trace:
> java.lang.NullPointerException
> at
> org.apache.hadoop.dfs.FSImage.getDistributedUpgradeState(FSImage.java:1036)
> at org.apache.hadoop.dfs.FSImage.setFields(FSImage.java:411)
> at org.apache.hadoop.dfs.Storage$StorageDirectory.write(Storage.java:169)
> at
> org.apache.hadoop.dfs.UpgradeUtilities.createVersionFile(UpgradeUtilities.java:306)
> at
> org.apache.hadoop.dfs.TestDistributedUpgrade.testDistributedUpgrade(TestDistributedUpgrade.java:100)
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