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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10454) Tags presence file info can be wrong in HFiles when PrefixTree encoding is used
Date Wed, 05 Feb 2014 01:19:08 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10454?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13891563#comment-13891563
] 

Hudson commented on HBASE-10454:
--------------------------------

FAILURE: Integrated in HBase-TRUNK-on-Hadoop-1.1 #79 (See [https://builds.apache.org/job/HBase-TRUNK-on-Hadoop-1.1/79/])
HBASE-10454 Tags presence file info can be wrong in HFiles when PrefixTree encoding is used.
(anoopsamjohn: rev 1564384)
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileWriterV3.java


> Tags presence file info can be wrong in HFiles when PrefixTree encoding is used
> -------------------------------------------------------------------------------
>
>                 Key: HBASE-10454
>                 URL: https://issues.apache.org/jira/browse/HBASE-10454
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.98.0
>            Reporter: Anoop Sam John
>            Assignee: Anoop Sam John
>            Priority: Minor
>             Fix For: 0.98.0, 0.99.0
>
>         Attachments: HBASE-10454.patch, HBASE-10454_V2.patch
>
>
> We always encode tags in case of Prefix tree now and so the code path, while decoding,
not checking what is there in FileInfo. So functionally no issues now.
> If we do HBASE-10453 this change will be very important to make sure BC for old files.
> We use the file info MAX_TAGS_LEN to know the presence of tags in a file. In case of
prefix tree we always have tags in files even if all kvs have 0 tags.  So better we can add
this file info into prefix tree encoded HFiles.  Now it get missed.



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