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From "Brahma Reddy Battula (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10930) Refactor: Wrap Datanode IO related operations
Date Thu, 01 Dec 2016 03:20:58 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10930?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15710712#comment-15710712

Brahma Reddy Battula commented on HDFS-10930:

 *Regarding Trunk commit.* 
1) Seems commit message contains wrong jiraID,it should be HDFS-10930
{noformat}HADOOP-10930. Refactor: Wrap Datanode IO related operations. Contributed by Xiaoyu

2) can you look following  findbug?
    FindBugs :

long) may fail to clean up java.io.InputStream on checked exception Obligation to clean up
resource created at BlockPoolSlice.java:clean up java.io.InputStream on checked exception
Obligation to clean up resource created at BlockPoolSlice.java:[line 720] is not discharged


> Refactor: Wrap Datanode IO related operations
> ---------------------------------------------
>                 Key: HDFS-10930
>                 URL: https://issues.apache.org/jira/browse/HDFS-10930
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>            Reporter: Xiaoyu Yao
>            Assignee: Xiaoyu Yao
>             Fix For: 3.0.0-alpha2
>         Attachments: HDFS-10930-branch-2.00.patch, HDFS-10930-branch-2.001.patch, HDFS-10930.01.patch,
HDFS-10930.02.patch, HDFS-10930.03.patch, HDFS-10930.04.patch, HDFS-10930.05.patch, HDFS-10930.06.patch,
HDFS-10930.07.patch, HDFS-10930.barnch-2.00.patch
> Datanode IO (Disk/Network) related operations and instrumentations are currently spilled
in many classes such as DataNode.java, BlockReceiver.java, BlockSender.java, FsDatasetImpl.java,
FsVolumeImpl.java, DirectoryScanner.java, BlockScanner.java, FsDatasetAsyncDiskService.java,
LocalReplica.java, LocalReplicaPipeline.java, Storage.java, etc. 
> This ticket is opened to consolidate IO related operations for easy instrumentation,
metrics collection, logging and trouble shooting. 

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