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https://issues.apache.org/jira/browse/HDFS-10930?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15710712#comment-15710712
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Brahma Reddy Battula edited comment on HDFS-10930 at 12/1/16 3:22 AM:
----------------------------------------------------------------------

 *Regarding Trunk commit.* 
1) Seems mistakenly given jiraID,should be HDFS-10930..?
{noformat}HADOOP-10930. Refactor: Wrap Datanode IO related operations. 
Contributed by Xiaoyu Yao.{noformat}

2) can you look following  findbug?
{noformat}
    FindBugs :

       module:hadoop-hdfs-project/hadoop-hdfs 
       
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.BlockPoolSlice.validateIntegrityAndSetLength(File,
 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 
{noformat}




was (Author: brahmareddy):
 *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 Yao.{noformat}

2) can you look following  findbug?
{noformat}
    FindBugs :

       module:hadoop-hdfs-project/hadoop-hdfs 
       
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.BlockPoolSlice.validateIntegrityAndSetLength(File,
 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 
{noformat}



> 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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