hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jean-Daniel Cryans (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-5174) Coalesce aborted tasks in the TaskMonitor
Date Tue, 10 Jan 2012 19:35:39 GMT
Coalesce aborted tasks in the TaskMonitor
-----------------------------------------

                 Key: HBASE-5174
                 URL: https://issues.apache.org/jira/browse/HBASE-5174
             Project: HBase
          Issue Type: Improvement
    Affects Versions: 0.92.0
            Reporter: Jean-Daniel Cryans
             Fix For: 0.94.0, 0.92.1


Some tasks can get repeatedly canceled like flushing when splitting is going on, in the logs
it looks like this:

{noformat}
2012-01-10 19:28:29,164 INFO org.apache.hadoop.hbase.regionserver.MemStoreFlusher: Flush of
region test1,,1326223218996.3eea0d89af7b851c3a9b4246389a4f2c. due to global heap pressure
2012-01-10 19:28:29,164 DEBUG org.apache.hadoop.hbase.regionserver.HRegion: NOT flushing memstore
for region test1,,1326223218996.3eea0d89af7b851c3a9b4246389a4f2c., flushing=false, writesEnabled=false
2012-01-10 19:28:29,164 DEBUG org.apache.hadoop.hbase.regionserver.MemStoreFlusher: Flush
thread woke up because memory above low water=1.6g
2012-01-10 19:28:29,164 INFO org.apache.hadoop.hbase.regionserver.MemStoreFlusher: Flush of
region test1,,1326223218996.3eea0d89af7b851c3a9b4246389a4f2c. due to global heap pressure
2012-01-10 19:28:29,164 DEBUG org.apache.hadoop.hbase.regionserver.HRegion: NOT flushing memstore
for region test1,,1326223218996.3eea0d89af7b851c3a9b4246389a4f2c., flushing=false, writesEnabled=false
2012-01-10 19:28:29,164 DEBUG org.apache.hadoop.hbase.regionserver.MemStoreFlusher: Flush
thread woke up because memory above low water=1.6g
2012-01-10 19:28:29,164 INFO org.apache.hadoop.hbase.regionserver.MemStoreFlusher: Flush of
region test1,,1326223218996.3eea0d89af7b851c3a9b4246389a4f2c. due to global heap pressure
2012-01-10 19:28:29,164 DEBUG org.apache.hadoop.hbase.regionserver.HRegion: NOT flushing memstore
for region test1,,1326223218996.3eea0d89af7b851c3a9b4246389a4f2c., flushing=false, writesEnabled=false
{noformat}

But in the TaskMonitor UI you'll get MAX_TASKS (1000) displayed on top of the regions. Basically
1000x:

{noformat}
Tue Jan 10 19:28:29 UTC 2012	Flushing test1,,1326223218996.3eea0d89af7b851c3a9b4246389a4f2c.
ABORTED (since 31sec ago)	Not flushing since writes not enabled (since 31sec ago)
{noformat}

It's ugly and I'm sure some users will freak out seeing this, plus you have to scroll down
all the way to see your regions. Coalescing consecutive aborted tasks seems like a good solution.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message