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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6991) Notify NN of evicted block before deleting it from RAM disk
Date Wed, 01 Oct 2014 16:14:57 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14155027#comment-14155027
] 

Hudson commented on HDFS-6991:
------------------------------

FAILURE: Integrated in Hadoop-trunk-Commit #6163 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/6163/])
HDFS-6991. Notify NN of evicted block before deleting it from RAM disk. (Arpit Agarwal) (arp:
rev a18caf7753623a94a7cdb1c607cda79586de08dc)
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestLazyPersistFiles.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/MiniDFSCluster.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPOfferService.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-6581.txt
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java


> Notify NN of evicted block before deleting it from RAM disk
> -----------------------------------------------------------
>
>                 Key: HDFS-6991
>                 URL: https://issues.apache.org/jira/browse/HDFS-6991
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode, namenode
>    Affects Versions: HDFS-6581
>            Reporter: Arpit Agarwal
>            Assignee: Arpit Agarwal
>             Fix For: HDFS-6581
>
>         Attachments: HDFS-6991.01.patch, HDFS-6991.02.patch, HDFS-6991.03.patch
>
>
> Couple of bug fixes required around eviction:
> # When evicting a block from RAM disk to persistent storage, the DN should schedule an
incremental block report for a 'received' replica on persistent storage.
> # {{BlockManager.processReportedBlock}} needs a fix to correctly update the storage ID
to reflect the block moving from RAM_DISK to DISK.
> Found by [~xyao] via HDFS-6950.



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