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Posted to issues@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2013/08/29 00:07:51 UTC
[jira] [Commented] (HBASE-9371) Eliminate log spam when tailing
files
[ https://issues.apache.org/jira/browse/HBASE-9371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13752935#comment-13752935 ]
stack commented on HBASE-9371:
------------------------------
+1
> 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
> 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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