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From "Brahma Reddy Battula (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-10810) Setreplication removing block from underconstrcution temporarily when batch IBR is enabled.
Date Fri, 16 Sep 2016 18:12:20 GMT

     [ https://issues.apache.org/jira/browse/HDFS-10810?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Brahma Reddy Battula updated HDFS-10810:
----------------------------------------
    Description: 
1)Batch IBR is enabled with number of committed blocks allowed=1
2) Written one block and closed the file without waiting for IBR
3)Setreplication called immediately on the file. 

So till the finalized IBR Received, block will not be added to {{neededReconstruction}} since
following check will be {{false}} as block is not marked as complete.
{code}
if (isNeededReconstruction(block, repl.liveReplicas())) {
        neededReconstruction.update(block, repl.liveReplicas(),
            repl.readOnlyReplicas(), repl.decommissionedAndDecommissioning(),
            curExpectedReplicas, curReplicasDelta, expectedReplicasDelta);
      }.{code}

Hence block will not marked as under-replicated.

  was:
1)Batch IBR is enabled with number of committed blocks allowed=1
2) Written one block and closed the file without waiting for IBR
3)Setreplication called immediately on the file. 

So till the finalized IBR Received, block will not be added to neededReconstruction
{code}
if (isNeededReconstruction(block, repl.liveReplicas())) {
        neededReconstruction.update(block, repl.liveReplicas(),
            repl.readOnlyReplicas(), repl.decommissionedAndDecommissioning(),
            curExpectedReplicas, curReplicasDelta, expectedReplicasDelta);
      }.{code}


>  Setreplication removing block from underconstrcution temporarily when batch IBR is enabled.
> --------------------------------------------------------------------------------------------
>
>                 Key: HDFS-10810
>                 URL: https://issues.apache.org/jira/browse/HDFS-10810
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Brahma Reddy Battula
>            Assignee: Brahma Reddy Battula
>         Attachments: HDFS-10810-002.patch, HDFS-10810.patch
>
>
> 1)Batch IBR is enabled with number of committed blocks allowed=1
> 2) Written one block and closed the file without waiting for IBR
> 3)Setreplication called immediately on the file. 
> So till the finalized IBR Received, block will not be added to {{neededReconstruction}}
since following check will be {{false}} as block is not marked as complete.
> {code}
> if (isNeededReconstruction(block, repl.liveReplicas())) {
>         neededReconstruction.update(block, repl.liveReplicas(),
>             repl.readOnlyReplicas(), repl.decommissionedAndDecommissioning(),
>             curExpectedReplicas, curReplicasDelta, expectedReplicasDelta);
>       }.{code}
> Hence block will not marked as under-replicated.



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