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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-2231) Compaction events should be written to HLog
Date Thu, 23 May 2013 18:43:25 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13665476#comment-13665476

Jean-Daniel Cryans commented on HBASE-2231:

The new INFO logging seems kinda chatty (and it shows up on multiple lines):

2013-05-23 11:38:12,955 INFO  [RegionServer:0;,57009,1369334164639-smallCompactions-1369334211720]
org.apache.hadoop.hbase.regionserver.wal.HLogUtil: Appended compaction marker tableName: "TestTable"
encodedRegionName: "338447e35d9c2b5b0a38e982c08cbf09"
familyName: "info"
compactionInput: "515e42ec2ef746fa86a5ca7acbc58aed"
compactionInput: "8abc6ae8c4754484b2628a4f4909342c"
compactionInput: "303b7f1767b24408a55813142a5618c8"
compactionInput: "0f93806c7ecf43a487f0c5dcc2de911f"
compactionOutput: "1bff72a0b8664a0b8072049a1899e908"
storeHomeDir: "info"

I'm not sure what the value is.
> Compaction events should be written to HLog
> -------------------------------------------
>                 Key: HBASE-2231
>                 URL: https://issues.apache.org/jira/browse/HBASE-2231
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>            Reporter: Todd Lipcon
>            Assignee: stack
>            Priority: Blocker
>              Labels: moved_from_0_20_5
>             Fix For: 0.98.0, 0.95.1
>         Attachments: 2231-testcase-0.94.txt, 2231-testcase_v2.txt, 2231-testcase_v3.txt,
2231v2.txt, 2231v3.txt, 2231v4.txt, hbase-2231-testcase.txt, hbase-2231.txt, hbase-2231_v5.patch,
hbase-2231_v6.patch, hbase-2231_v7-0.95.patch, hbase-2231_v7.patch, hbase-2231_v7.patch
> The sequence for a compaction should look like this:
> # Compact region to "new" files
> # Write a "Compacted Region" entry to the HLog
> # Delete "old" files
> This deals with a case where the RS has paused between step 1 and 2 and the regions have
since been reassigned.

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