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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6926) DN support for saving replicas to persistent storage and evicting in-memory replicas
Date Thu, 02 Oct 2014 11:33:52 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6926?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14156407#comment-14156407
] 

Hudson commented on HDFS-6926:
------------------------------

FAILURE: Integrated in Hadoop-Hdfs-trunk #1889 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/1889/])
HDFS-6926. DN support for saving replicas to persistent storage and evicting in-memory replicas.
(Arpit Agarwal) (aagarwal: rev eb448e14399e17f11b9e523e4050de245b9b0408)
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsVolumeImpl.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-6581.txt
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaInPipeline.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/SimulatedFSDataset.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/BlockPoolSlice.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/LazyWriteReplicaTracker.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/main/java/org/apache/hadoop/hdfs/server/datanode/DataStorage.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestAddBlockRetry.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockPoolSliceScanner.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/AvailableSpaceVolumeChoosingPolicy.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/FsDatasetSpi.java


> DN support for saving replicas to persistent storage and evicting in-memory replicas
> ------------------------------------------------------------------------------------
>
>                 Key: HDFS-6926
>                 URL: https://issues.apache.org/jira/browse/HDFS-6926
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode
>    Affects Versions: HDFS-6581
>            Reporter: Arpit Agarwal
>            Assignee: Arpit Agarwal
>             Fix For: 3.0.0
>
>         Attachments: HDFS-6926.01.patch
>
>
> Add the following:
> # A lazy writer on the DN to move replicas from RAM disk to persistent storage.
> # 'Evict' persisted replicas from RAM disk to make space for new blocks.



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