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From "huaxiang" <huaxi...@asiainfo-linkage.com>
Subject too many hlog request?
Date Thu, 25 Apr 2013 14:44:56 GMT
Hi, 

   There are many 'hlog roll request' with CDH4.2. large number inputs
continus lead to this happen. Is is normal or not?

   Log from regionserver below:

 

 
bigtable/7756276e3e6995cd9c5e3c41af186422/cf/a9d81c2dc87940de9c22bcc09b801d4
e

2013-04-25 22:41:52,377 INFO org.apache.hadoop.hbase.regionserver.Store:
Added
hdfs://mycluster/hbase/T22_0513_201303_bigtable/7756276e3e6995cd9c5e3c41af18
6422/cf/a9d81c2dc87940de9c22bcc09b801d4e, entries=209867,
sequenceid=47053702, filesize=29.2m

2013-04-25 22:41:52,379 INFO org.apache.hadoop.hbase.regionserver.HRegion:
Finished memstore flush of ~128.1m/134343224, currentsize=2.0m/2138432 for
region
T22_0513_201303_bigtable,,1366900584349.7756276e3e6995cd9c5e3c41af186422. in
1134ms, sequenceid=47053702, compaction requested=false

2013-04-25 22:41:53,304 DEBUG
org.apache.hadoop.hbase.regionserver.LogRoller: HLog roll requested

2013-04-25 22:41:53,348 DEBUG
org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogWriter: using new
createWriter -- HADOOP-6840

2013-04-25 22:41:53,348 DEBUG
org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogWriter:
Path=hdfs://mycluster/hbase/.logs/hadoop1,60020,1366896337574/hadoop1%2C6002
0%2C1366896337574.1366900913304, syncFs=true, hflush=true, compression=false

2013-04-25 22:41:53,348 DEBUG org.apache.hadoop.hbase.regionserver.wal.HLog:
cleanupCurrentWriter  waiting for transactions to get synced  total 357665
synced till here 357664

2013-04-25 22:41:53,373 INFO org.apache.hadoop.hbase.regionserver.wal.HLog:
Roll
/hbase/.logs/hadoop1,60020,1366896337574/hadoop1%2C60020%2C1366896337574.136
6900893688, entries=1603, filesize=64203414.  for
/hbase/.logs/hadoop1,60020,1366896337574/hadoop1%2C60020%2C1366896337574.136
6900913304

2013-04-25 22:42:07,849 DEBUG
org.apache.hadoop.hbase.regionserver.LogRoller: HLog roll requested

2013-04-25 22:42:07,892 DEBUG
org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogWriter: using new
createWriter -- HADOOP-6840

2013-04-25 22:42:07,892 DEBUG
org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogWriter:
Path=hdfs://mycluster/hbase/.logs/hadoop1,60020,1366896337574/hadoop1%2C6002
0%2C1366896337574.1366900927850, syncFs=true, hflush=true, compression=false

2013-04-25 22:42:07,926 INFO org.apache.hadoop.hbase.regionserver.wal.HLog:
Roll
/hbase/.logs/hadoop1,60020,1366896337574/hadoop1%2C60020%2C1366896337574.136
6900913304, entries=1615, filesize=64095342.  for
/hbase/.logs/hadoop1,60020,1366896337574/hadoop1%2C60020%2C1366896337574.136
6900927850

 

 

   Best R

    beatls


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