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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8072) Reserved RBW space is not released if client terminates while writing block
Date Wed, 08 Apr 2015 18:43:13 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8072?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14485770#comment-14485770
] 

Hudson commented on HDFS-8072:
------------------------------

FAILURE: Integrated in Hadoop-trunk-Commit #7535 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/7535/])
HDFS-8072. Reserved RBW space is not released if client terminates while writing block. (Arpit
Agarwal) (arp: rev 608c4998419c18fd95019b28cc56b5bd5aa4cc01)
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestRbwSpaceReservation.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaInPipeline.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockReceiver.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/extdataset/ExternalReplicaInPipeline.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaInPipelineInterface.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/SimulatedFSDataset.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt


> Reserved RBW space is not released if client terminates while writing block
> ---------------------------------------------------------------------------
>
>                 Key: HDFS-8072
>                 URL: https://issues.apache.org/jira/browse/HDFS-8072
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode
>    Affects Versions: 2.6.0
>            Reporter: Arpit Agarwal
>            Assignee: Arpit Agarwal
>             Fix For: 2.7.0
>
>         Attachments: HDFS-8072.01.patch, HDFS-8072.02.patch
>
>
> The DataNode reserves space for a full block when creating an RBW block (introduced in
HDFS-6898).
> The reserved space is released incrementally as data is written to disk and fully when
the block is finalized. However if the client process terminates unexpectedly mid-write then
the reserved space is not released until the DN is restarted.



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