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From: "Jimmy Xiang (JIRA)" <jira@apache.org>
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Subject: [jira] [Updated] (HBASE-8314) HLogSplitter can retry to open a
 0-length hlog file
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     [ https://issues.apache.org/jira/browse/HBASE-8314?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jimmy Xiang updated HBASE-8314:
-------------------------------

    Attachment: trunk-8314_v2.patch

Addressed Matteo and Nicolas' comments.  I will commit it tomorrow if no objection.
                
> HLogSplitter can retry to open a 0-length hlog file
> ---------------------------------------------------
>
>                 Key: HBASE-8314
>                 URL: https://issues.apache.org/jira/browse/HBASE-8314
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Jimmy Xiang
>            Assignee: Jimmy Xiang
>         Attachments: region-server.log, trunk-8314.patch, trunk-8314_v2.patch
>
>
> In case a HLog file is of size 0, and it is under recovery, HLogSplitter will fail to open it since it can get the file length, therefore, master can't start.
> {noformat}
> java.io.IOException: Cannot obtain block length for LocatedBlock{...; getBlockSize()=0; corrupt=false; offset=0; locs=[...]}
>     at org.apache.hadoop.hdfs.DFSInputStream.readBlockLength(DFSInputStream.java:238)
>     at org.apache.hadoop.hdfs.DFSInputStream.fetchLocatedBlocksAndGetLastBlockLength(DFSInputStream.java:182)
>     at org.apache.hadoop.hdfs.DFSInputStream.openInfo(DFSInputStream.java:124)
>     at org.apache.hadoop.hdfs.DFSInputStream.<init>(DFSInputStream.java:117)
>     at org.apache.hadoop.hdfs.DFSClient.open(DFSClient.java:1080)
> {noformat}

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