Jean-Daniel Cryans created HBASE-9371:
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Summary: 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
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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