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Posted to commits@cassandra.apache.org by "Caleb Rackliffe (Jira)" <ji...@apache.org> on 2022/12/19 18:25:00 UTC
[jira] [Commented] (CASSANDRA-18125) AssertionError on thread MemtableReclaimMemory in MemtablePool$SubPool.released(MemtablePool.java:193)
[ https://issues.apache.org/jira/browse/CASSANDRA-18125?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17649432#comment-17649432 ]
Caleb Rackliffe commented on CASSANDRA-18125:
---------------------------------------------
Thanks for the report!
Is there any chance you could provide a little more information around the following?
1.) Are secondary indexes in use?
2.) Is this an overwrite-heavy write workload?
3.) Are off-heap memtables in use?
> AssertionError on thread MemtableReclaimMemory in MemtablePool$SubPool.released(MemtablePool.java:193)
> ------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-18125
> URL: https://issues.apache.org/jira/browse/CASSANDRA-18125
> Project: Cassandra
> Issue Type: Bug
> Reporter: Nicolas Henneaux
> Priority: Normal
>
> On two nodes (on a 5 nodes cluster) on the cluster I'm running, I got the following exception. It occurred at 3,5 minutes interval.
> {code}
> MemtableReclaimMemory:2625 org.apache.cassandra.service.CassandraDaemon uncaughtException - Exception in thread Thread[MemtableReclaimMemory:2625,5,main]java.lang.AssertionError: null
> at org.apache.cassandra.utils.memory.MemtablePool$SubPool.released(MemtablePool.java:193)
> at org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.releaseAll(MemtableAllocator.java:151)
> at org.apache.cassandra.utils.memory.MemtableAllocator$SubAllocator.setDiscarded(MemtableAllocator.java:142)
> at org.apache.cassandra.utils.memory.MemtableAllocator.setDiscarded(MemtableAllocator.java:93)
> at org.apache.cassandra.utils.memory.SlabAllocator.setDiscarded(SlabAllocator.java:120)
> at org.apache.cassandra.db.Memtable.setDiscarded(Memtable.java:201)
> at org.apache.cassandra.db.ColumnFamilyStore$Flush$1.runMayThrow(ColumnFamilyStore.java:1216)
> at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
> at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
> at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
> at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
> at java.base/java.lang.Thread.run(Thread.java:829)
> {code}
> {code}
> $ nodetool info
> ID :
> Gossip active : true
> Native Transport active: true
> Load : 204.67 GiB
> Generation No : 1670343179
> Uptime (seconds) : 1110514
> Heap Memory (MB) : 7218.07 / 24576.00
> Off Heap Memory (MB) : 784.06
> Data Center : par
> Rack : e1
> Exceptions : 1
> Key Cache : entries 802712, size 100 MiB, capacity 100 MiB, 774541004 hits, 914207516 requests, 0.847 recent hit rate, 14400 save period in seconds
> Row Cache : entries 0, size 0 bytes, capacity 0 bytes, 0 hits, 0 requests, NaN recent hit rate, 0 save period in seconds
> Counter Cache : entries 0, size 0 bytes, capacity 50 MiB, 0 hits, 0 requests, NaN recent hit rate, 7200 save period in seconds
> Percent Repaired : 2.3272298419424144E-5%
> Token : (invoke with -T/--tokens to see all 8 tokens)
> $ java -version
> openjdk version "11.0.16" 2022-07-19 LTS
> OpenJDK Runtime Environment (Red_Hat-11.0.16.0.8-1.el7_9) (build 11.0.16+8-LTS)
> OpenJDK 64-Bit Server VM (Red_Hat-11.0.16.0.8-1.el7_9) (build 11.0.16+8-LTS, mixed mode, sharing)
> $ nodetool version
> ReleaseVersion: 4.0.6
> {code}
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