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From "jiraposter@reviews.apache.org (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4148) HFileOutputFormat doesn't fill in TIMERANGE_KEY metadata
Date Sat, 30 Jul 2011 18:42:11 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4148?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13073230#comment-13073230
] 

jiraposter@reviews.apache.org commented on HBASE-4148:
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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/1229/
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Review request for hbase and Todd Lipcon.


Summary
-------

When HFiles are flushed through the normal path, they include an attribute TIMERANGE_KEY which
can be used to cull HFiles when performing a time-restricted scan. Files produced by HFileOutputFormat
are currently missing this metadata.


This addresses bug HBASE-4148.
    https://issues.apache.org/jira/browse/HBASE-4148


Diffs
-----

  src/main/java/org/apache/hadoop/hbase/mapreduce/HFileOutputFormat.java 8ccdf4d 
  src/main/java/org/apache/hadoop/hbase/regionserver/StoreFile.java 40efdda 
  src/test/java/org/apache/hadoop/hbase/mapreduce/TestHFileOutputFormat.java 89241eb 

Diff: https://reviews.apache.org/r/1229/diff


Testing
-------

Added unit test.  

I don't quite understand why the KeyValue with the larger timestamp (2000) value must be written
before the one with the smaller timestamp (1000). I can see the code that enforces this (HFile.checkKey)
but not why keys are larger to smaller.  Is this in HFile data precondition?

I cannot get the full test suite to pass, with or without this patch.  Suite seems to timeout
on tests unrelated to this.  Would appreciate some hints or pointers for info on which tests
are flakey or take a long time to run.


Thanks,

jmhsieh



> HFileOutputFormat doesn't fill in TIMERANGE_KEY metadata
> --------------------------------------------------------
>
>                 Key: HBASE-4148
>                 URL: https://issues.apache.org/jira/browse/HBASE-4148
>             Project: HBase
>          Issue Type: Bug
>          Components: mapreduce
>    Affects Versions: 0.90.3
>            Reporter: Todd Lipcon
>            Assignee: Jonathan Hsieh
>             Fix For: 0.90.5
>
>         Attachments: 0001-HBASE-4148.-HFileOutputFormat-doesn-t-fill-in-TIMERA.patch
>
>
> When HFiles are flushed through the normal path, they include an attribute TIMERANGE_KEY
which can be used to cull HFiles when performing a time-restricted scan. Files produced by
HFileOutputFormat are currently missing this metadata.

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