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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9371) Eliminate log spam when tailing files
Date Thu, 29 Aug 2013 13:07:56 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13753591#comment-13753591
] 

Hudson commented on HBASE-9371:
-------------------------------

FAILURE: Integrated in HBase-TRUNK-on-Hadoop-2.0.0 #701 (See [https://builds.apache.org/job/HBase-TRUNK-on-Hadoop-2.0.0/701/])
HBASE-9371 Eliminate log spam when tailing files
HBASE-9326 ServerName is created using getLocalSocketAddress, breaks binding to the wildcard
           address. Revert HBASE-8640 (jdcryans: rev 1518430)
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/fs/HFileSystem.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/ProtobufLogReader.java

                
> Eliminate log spam when tailing files
> -------------------------------------
>
>                 Key: HBASE-9371
>                 URL: https://issues.apache.org/jira/browse/HBASE-9371
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 0.95.2
>            Reporter: Jean-Daniel Cryans
>            Assignee: Jean-Daniel Cryans
>            Priority: Minor
>             Fix For: 0.98.0, 0.96.0
>
>         Attachments: HBASE-9371.patch
>
>
> Tailing a file involves reopening it for each seek, so for example when running replication
it looks like this every time:
> {noformat}
> 2013-08-28 21:45:00,205 DEBUG [regionserver60020-EventThread.replicationSource,1] org.apache.hadoop.hbase.fs.HFileSystem:
/hbase-master/WALs/jdec2hbase0403-5,60020,1377724981186/jdec2hbase0403-5%2C60020%2C1377724981186.1377725847406
is an HLog file, so reordering blocks, last hostname will be:jdec2hbase0403-5
> 2013-08-28 21:45:00,211 DEBUG [regionserver60020-EventThread.replicationSource,1] org.apache.hadoop.hbase.regionserver.wal.ProtobufLogReader:
After reading the trailer: walEditsStopOffset: 0, fileLength: 0, trailerPresent: false
> {noformat}
> The frequency makes it more relevant for TRACEing.

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