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https://issues.apache.org/jira/browse/HDFS-7926?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14360791#comment-14360791
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Hudson commented on HDFS-7926:
------------------------------
FAILURE: Integrated in Hadoop-trunk-Commit #7317 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/7317/])
HDFS-7926. NameNode implementation of ClientProtocol.truncate(..) is not
idempotent. Contributed by Tsz Wo Nicholas Sze (brandonli: rev
f446669afb5c3d31a00c65449f27088b39e11ae3)
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockInfoContiguousUnderConstruction.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFileTruncate.java
> NameNode implementation of ClientProtocol.truncate(..) is not idempotent
> ------------------------------------------------------------------------
>
> Key: HDFS-7926
> URL: https://issues.apache.org/jira/browse/HDFS-7926
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Reporter: Tsz Wo Nicholas Sze
> Assignee: Tsz Wo Nicholas Sze
> Attachments: h7926_20150313.patch, h7926_20150313b.patch
>
>
> If dfsclient drops the first response of a truncate RPC call, the retry by
> retry cache will fail with "DFSClient ... is already the current lease
> holder". The truncate RPC is annotated as @Idempotent in ClientProtocol but
> the NameNode implementation is not.
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