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https://issues.apache.org/jira/browse/HDFS-11674?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16450725#comment-16450725
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Hudson commented on HDFS-11674:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #14057 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/14057/])
HDFS-11674. reserveSpaceForReplicas is not released if append request (xyao:
rev be303c29906002a4cb1c00a47b7844cce3de591f)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/DFSTestUtil.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestSpaceReservation.java
> reserveSpaceForReplicas is not released if append request failed due to
> mirror down and replica recovered
> ---------------------------------------------------------------------------------------------------------
>
> Key: HDFS-11674
> URL: https://issues.apache.org/jira/browse/HDFS-11674
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Reporter: Vinayakumar B
> Assignee: Vinayakumar B
> Priority: Critical
> Fix For: 2.9.0, 2.7.4, 3.0.0-alpha4, 2.8.2
>
> Attachments: HDFS-11674-01.patch, HDFS-11674-02.patch,
> HDFS-11674-03.patch, HDFS-11674-branch-2.7-03.patch
>
>
> Scenario:
> 1. 3 Node cluster with
> "dfs.client.block.write.replace-datanode-on-failure.policy" as DEFAULT
> Block is written with x data.
> 2. One of the Datanode, NOT the first DN, is down
> 3. Client tries to append data to block and fails since one DN is down.
> 4. calls recoverLease() on the file.
> 5. Successfull recovery happens.
> Issue:
> 1. DNs which were connected from client before encountering mirror down, will
> have the reservedSpaceForReplicas incremented, BUT never decremented.
> 2. So in long run DN's all space will be in reservedSpaceForReplicas
> resulting OutOfSpace errors.
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