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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (CASSANDRA-885) OOM on Commit log Replay
Date Tue, 16 Mar 2010 22:12:27 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-885?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Ellis reassigned CASSANDRA-885:
----------------------------------------

    Assignee: Jonathan Ellis

> OOM on Commit log Replay
> ------------------------
>
>                 Key: CASSANDRA-885
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-885
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.5
>            Reporter: Paul Querna
>            Assignee: Jonathan Ellis
>             Fix For: 0.6
>
>
> Running 0.5.
> We had a node reboot, and when it came back up, it was unable to replay the commit logs,
it would OOM every time.
> We upped the max heap to 6 gigs, but it didn't help.
> I have a heap dump and have it opened in Eclipse MAT.
> Anything specific I should pull out?
> Class Name                                                                          
        | Shallow Heap | Retained Heap | Percentage 
> ----------------------------------------------------------------------------------------------------------------------------------------
>                                                                                     
        |              |               |            
> org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor @ 0x7fad06454f48       
        |          112 | 2,604,583,312 |     84.35% 
> |- java.util.concurrent.LinkedBlockingQueue @ 0x7fad06405b78                        
        |           80 | 2,604,579,864 |     84.35% 
> |- java.util.HashSet @ 0x7fad071b2110                                               
        |           24 |         2,952 |      0.00% 
> |- java.lang.String @ 0x7fad071b3588  org.apache.cassandra.concurrent:type=ROW-MUTATION-STAGE|
          40 |           176 |      0.00% 
> |- org.apache.cassandra.concurrent.NamedThreadFactory @ 0x7fad0714e998              
        |           32 |            56 |      0.00% 
> |- java.util.concurrent.locks.ReentrantLock$NonfairSync @ 0x7fad0722b570            
        |           48 |            48 |      0.00% 
> |- java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject @ 0x7fad071b3560
   |           40 |            40 |      0.00% 
> |- java.util.concurrent.atomic.AtomicInteger @ 0x7fad071b20e0                       
        |           24 |            24 |      0.00% 
> |- java.util.concurrent.locks.ReentrantLock @ 0x7fad071b20f8                        
        |           24 |            24 |      0.00% 
> |- java.util.concurrent.ThreadPoolExecutor$CallerRunsPolicy @ 0x7fad071b2128        
        |           16 |            16 |      0.00% 
> '- Total: 9 entries                                                                 
        |              |               |            
> org.apache.cassandra.db.ColumnFamilyStore @ 0x7fad063b3390                          
        |          104 |    95,871,520 |      3.10% 
> org.apache.cassandra.db.ColumnFamilyStore @ 0x7fad063b3460                          
        |          104 |    82,056,536 |      2.66% 
> org.apache.cassandra.db.ColumnFamilyStore @ 0x7fad063b3188                          
        |          104 |    72,894,176 |      2.36% 
> org.apache.cassandra.db.ColumnFamilyStore @ 0x7fad06331798                          
        |          104 |    45,394,360 |      1.47% 
> org.apache.cassandra.db.ColumnFamilyStore @ 0x7fad06331660                          
        |          104 |    33,895,560 |      1.10% 
> java.lang.Thread @ 0x7fad060e2320  main Native Stack, Thread                        
        |          168 |    33,573,328 |      1.09% 
> org.apache.cassandra.db.ColumnFamilyStore @ 0x7fad06287e50                          
        |          104 |    33,528,680 |      1.09% 
> org.apache.cassandra.db.ColumnFamilyStore @ 0x7fad063b3530                          
        |          104 |    33,423,720 |      1.08% 
> org.apache.cassandra.db.ColumnFamilyStore @ 0x7fad063b32c0                          
        |          104 |    20,221,624 |      0.65% 
> org.apache.cassandra.db.Memtable @ 0x7fad06410120                                   
        |           96 |     9,383,880 |      0.30% 
> org.apache.cassandra.db.ColumnFamily @ 0x7fad33df3690                               
        |           80 |     1,190,016 |      0.04% 
> org.apache.cassandra.io.SSTableReader @ 0x7fad0653a4a0                              
        |           72 |       587,008 |      0.02% 
> org.apache.cassandra.io.SSTableReader @ 0x7fad06c41ef0                              
        |           72 |       543,552 |      0.02% 
> org.apache.cassandra.io.SSTableReader @ 0x7fad06456450                              
        |           72 |       541,320 |      0.02% 
> Total: 15 of 49,239 entries                                                         
        |              |               |            
> ----------------------------------------------------------------------------------------------------------------------------------------

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