hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "sunweiwei" <su...@asiainfo-linkage.com>
Subject 答复: 答复: 答复: forcing flush not works
Date Sat, 07 Jun 2014 01:33:11 GMT
Hi

The symptom reproduced again.
I paste the  log  in http://paste2.org/D2N6ZDvk,http://paste2.org/a64LXD0X
One is the regionserver jstack log.
The other is regionserver log, which was grep and only include the unflush region.

Thanks

-----邮件原件-----
发件人: sunweiwei [mailto:sunww@asiainfo-linkage.com] 
发送时间: 2014年6月5日 14:51
收件人: user@hbase.apache.org
主题: 答复: 答复: 答复: forcing flush not works

I'm sorry but the regionserver log have been deleted...

to Stack:
Yes, Always the same two regions of Table BT_D_BF001_201406 always can't be flushed.


Previously  I  have only saved a little log, When Table BT_D_BF001_201405  had lots of regions.
2014-05-27 22:40:52,025 DEBUG [regionserver60020.logRoller] regionserver.LogRoller: HLog roll
requested
2014-05-27 22:40:52,039 DEBUG [regionserver60020.logRoller] wal.FSHLog: cleanupCurrentWriter
 waiting for transactions to get synced  total 450500823 synced till here 450500779
2014-05-27 22:40:52,049 INFO  [regionserver60020.logRoller] wal.FSHLog: Rolled WAL /apps/hbase/data/WALs/hadoop03,60020,1401173211108/hadoop03%2C60020%2C1401173211108.1401201646659
with entries=94581, filesize=122.2 M; new WAL /apps/hbase/data/WALs/hadoop03,60020,1401173211108/hadoop03%2C60020%2C1401173211108.1401201652025
2014-05-27 22:40:52,049 INFO  [regionserver60020.logRoller] wal.FSHLog: Too many hlogs: logs=156,
maxlogs=32; forcing flush of 2 regions(s): a5b94272f0fdd477bf320e428059fe87, f1a60d3ea5820cb672832c59531de89d
2014-05-27 22:40:52,073 DEBUG [Thread-17] regionserver.MemStoreFlusher: Flush thread woke
up because memory above low water=6.1 G
2014-05-27 22:40:52,074 DEBUG [Thread-17] regionserver.MemStoreFlusher: Under global heap
pressure: Region BT_D_BF001_201405,8618989870918460036571102456550000000012320000002014050815160220140508151602174000000000462000001094000080000000000000000000548090000000,1401009042160.47633a80bd6fede708c05c9fcc9e2b39.
has too many store files, but is 27.6 M vs best flushable region's 0. Choosing the bigger.
2014-05-27 22:40:52,075 INFO  [Thread-17] regionserver.MemStoreFlusher: Flush of region BT_D_BF001_201405,8618989870918460036571102456550000000012320000002014050815160220140508151602174000000000462000001094000080000000000000000000548090000000,1401009042160.47633a80bd6fede708c05c9fcc9e2b39.
due to global heap pressure
2014-05-27 22:40:52,075 DEBUG [Thread-17] regionserver.HRegion: Started memstore flush for
BT_D_BF001_201405,8618989870918460036571102456550000000012320000002014050815160220140508151602174000000000462000001094000080000000000000000000548090000000,1401009042160.47633a80bd6fede708c05c9fcc9e2b39.,
current region memstore size 27.6 M
2014-05-27 22:40:52,599 INFO  [Thread-17] regionserver.DefaultStoreFlusher: Flushed, sequenceid=10069900941,
memsize=27.6 M, hasBloomFilter=true, into tmp file hdfs://hdpcluster/apps/hbase/data/data/default/BT_D_BF001_201405/47633a80bd6fede708c05c9fcc9e2b39/.tmp/a89428808e1a4be4a1bf7bd9ec8ece88
2014-05-27 22:40:52,608 DEBUG [Thread-17] regionserver.HRegionFileSystem: Committing store
file hdfs://hdpcluster/apps/hbase/data/data/default/BT_D_BF001_201405/47633a80bd6fede708c05c9fcc9e2b39/.tmp/a89428808e1a4be4a1bf7bd9ec8ece88
as hdfs://hdpcluster/apps/hbase/data/data/default/BT_D_BF001_201405/47633a80bd6fede708c05c9fcc9e2b39/cf/a89428808e1a4be4a1bf7bd9ec8ece88
2014-05-27 22:40:52,617 INFO  [Thread-17] regionserver.HStore: Added hdfs://hdpcluster/apps/hbase/data/data/default/BT_D_BF001_201405/47633a80bd6fede708c05c9fcc9e2b39/cf/a89428808e1a4be4a1bf7bd9ec8ece88,
entries=44962, sequenceid=10069900941, filesize=5.5 M
2014-05-27 22:40:52,618 INFO  [Thread-17] regionserver.HRegion: Finished memstore flush of
~27.6 M/28933240, currentsize=43.6 K/44664 for region BT_D_BF001_201405,8618989870918460036571102456550000000012320000002014050815160220140508151602174000000000462000001094000080000000000000000000548090000000,1401009042160.47633a80bd6fede708c05c9fcc9e2b39.
in 542ms, sequenceid=10069900941, compaction requested=true
2014-05-27 22:40:52,618 DEBUG [Thread-17] regionserver.CompactSplitThread: Small Compaction
requested: system; Because: Thread-17; compaction_queue=(4896:19152), split_queue=0, merge_queue=0


Thanks

-----邮件原件-----
发件人: ramkrishna vasudevan [mailto:ramkrishna.s.vasudevan@gmail.com] 
发送时间: 2014年6月5日 13:43
收件人: user@hbase.apache.org
主题: Re: 答复: 答复: forcing flush not works

>>I still (highly)suspect that there is something wrong with the flush
queue(some entry pushed into it can't be poll out).
Ya I too have that suspect.  May be any new logs may help to uncover the
issue.


On Thu, Jun 5, 2014 at 11:06 AM, Stack <stack@duboce.net> wrote:

> Always the same two regions that get stuck or does it vary?  Another set of
> example logs may help uncover the sequence of trouble-causing events.
>
> Thanks,
> St.Ack
>
>
> On Wed, Jun 4, 2014 at 7:31 PM, sunweiwei <sunww@asiainfo-linkage.com>
> wrote:
>
> > my log is similar as HBASE-10499.
> >
> > Thanks
> >
> > -----邮件原件-----
> > 发件人: saint.ack@gmail.com [mailto:saint.ack@gmail.com] 代表 Stack
> > 发送时间: 2014年6月3日 23:10
> > 收件人: Hbase-User
> > 主题: Re: 答复: forcing flush not works
> >
> > Mind posting link to your log?  Sounds like HBASE-10499 as Honghua says.
> > St.Ack
> >
> >
> > On Tue, Jun 3, 2014 at 2:34 AM, sunweiwei <sunww@asiainfo-linkage.com>
> > wrote:
> >
> > > Thanks. Maybe the same as HBase-10499.
> > > I stop the regionserver then start it. Then hbase back to normal.
> > > This is jstack log when  2 regions  can not  flush.
> > >
> > > "Thread-17" prio=10 tid=0x00007f6210383800 nid=0x6540 waiting on
> > condition
> > > [0x00007f61e0a26000]
> > >    java.lang.Thread.State: TIMED_WAITING (parking)
> > >         at sun.misc.Unsafe.park(Native Method)
> > >         - parking to wait for  <0x000000041ae0e6b8> (a
> > > java.util.concurrent.
> > > locks.AbstractQueuedSynchronizer$ConditionObject)
> > >         at
> > > java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:196)
> > >         at
> > >
> > >
> >
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitN
> > > anos(AbstractQueuedSynchronizer.java:2025)
> > >         at java.util.concurrent.DelayQueue.poll(DelayQueue.java:201)
> > >         at java.util.concurrent.DelayQueue.poll(DelayQueue.java:39)
> > >         at
> > >
> > >
> >
> org.apache.hadoop.hbase.regionserver.MemStoreFlusher$FlushHandler.run(MemSto
> > > reFlusher.java:228)
> > >         at java.lang.Thread.run(Thread.java:662)
> > >
> > > -----邮件原件-----
> > > 发件人: 冯宏华 [mailto:fenghonghua@xiaomi.com]
> > > 发送时间: 2014年6月3日 16:34
> > > 收件人: user@hbase.apache.org
> > > 主题: 答复: forcing flush not works
> > >
> > > The same symptom as HBase-10499?
> > >
> > > I still (highly)suspect that there is something wrong with the flush
> > > queue(some entry pushed into it can't be poll out).
> > > ________________________________________
> > > 发件人: sunweiwei [sunww@asiainfo-linkage.com]
> > > 发送时间: 2014年6月3日 15:43
> > > 收件人: user@hbase.apache.org
> > > 主题: forcing flush not works
> > >
> > > Hi
> > >
> > >
> > >
> > > I'm using a heavy-write hbase0.96 . I find this in regionserver log:
> > >
> > > 2014-06-03 15:13:19,445 INFO  [regionserver60020.logRoller] wal.FSHLog:
> > Too
> > > many hlogs: logs=33, maxlogs=32; forcing flush of 3 regions(s):
> > > 1a7dda3c3815c19970ace39fd99abfe8, aff81bc46aa7d3ed51a01f11f23c8320,
> > > d5666e003f598147b4dda509f173a779
> > >
> > > 2014-06-03 15:13:23,869 INFO  [regionserver60020.logRoller] wal.FSHLog:
> > Too
> > > many hlogs: logs=34, maxlogs=32; forcing flush of 2 regions(s):
> > > aff81bc46aa7d3ed51a01f11f23c8320, d5666e003f598147b4dda509f173a779
> > >
> > > ┇
> > >
> > > ┇
> > >
> > > 2014-06-03 15:18:14,778 INFO  [regionserver60020.logRoller] wal.FSHLog:
> > Too
> > > many hlogs: logs=93, maxlogs=32; forcing flush of 2 regions(s):
> > > aff81bc46aa7d3ed51a01f11f23c8320, d5666e003f598147b4dda509f173a779
> > >
> > >
> > >
> > >
> > >
> > > It seems like 2 regions can’t be flushed and WALs Dir continue to
> > increase
> > > and Then I find this in client log:
> > >
> > > INFO | AsyncProcess-waitForMaximumCurrentTasks [2014-06-03 15:30:53] -
> :
> > > Waiting for the global number of running tasks to be equals or less
> than
> > 0,
> > > tasksSent=15819, tasksDone=15818, currentTasksDone=15818,
> > > tableName=BT_D_BF001_201406
> > >
> > >
> > >
> > > Then write speed will become very slow.
> > >
> > > After I flush 2 regions  manually , write speed can back to normal
>  only
> > > a
> > > short while.
> > >
> > >
> > >
> > > Any suggestion will be appreciated. Thanks.
> > >
> > >
> > >
> >
> >
>


Mime
View raw message