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https://issues.apache.org/jira/browse/CASSANDRA-16430?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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sharanya updated CASSANDRA-16430:
---------------------------------
Description:
I have a 9 node cluster of cassandra, with 2gb of data on each node in our
production environment. We are continuously facing below warnings from one of
our monitoring tool, but there is no suspicious error from system.log file.
Also there is sufficient memory available for Heap/server.
warn - Cassandra JVM Memory Pools -Par Survivor Space UsedPoolMemory
Datasource: Cassandra JVM Memory Pools -Par Survivor Space
Datapoint: UsedPoolMemory
Level: warn
Start: 2021-02-08 10:11:17 GMT
Duration: 1h 0m
Value: 100.0
ClearValue: 1.3631
Reason: UsedPoolMemory is not >= 90: the current value is 1.3631
The java memory pool Par Survivor Space on esg3-c-cassv3-03p is now using 100.0
% of the maximum.
We see the below message in debug.log file.
2021-02-08 08:43:51,310 INFO [ReadStage-1] NoSpamLogger.java:91 - Maximum
memory usage reached (512.000MiB), cannot allocate chunk of 1.000MiB
2021-02-08 08:47:28,344 DEBUG [COMMIT-LOG-ALLOCATOR]
AbstractCommitLogSegmentManager.java:109 - No segments in reserve; creating a
fresh one
Please help us to fix this issue ASAP.
Thanks!
was:
I have a 9 node cluster of cassandra, with 2gb of data on each node in our
production environment. We are continuously facing below warnings from one of
our monitoring tool, but there is no suspicious error from system.log file.
Also there is sufficient memory available for Heap/server.
warn - Cassandra JVM Memory Pools -Par Survivor Space UsedPoolMemory
The java memory pool Par Survivor Space on esg3-c-cassv3-03p is now using 100.0
% of the maximum.
This started at 2021-02-08 11:44:17 GMT - or 0h 56m ago.
Datasource: Cassandra JVM Memory Pools
Instance: Cassandra JVM Memory Pools -Par Survivor SpaceDatapoint:
UsedPoolMemoryEffective Thresholds: >= 90
Please help us to fix this issue ASAP.
Thanks!
> Cassandra JVM Memory Pools -Par Survivor Space UsedPoolMemory
> -------------------------------------------------------------
>
> Key: CASSANDRA-16430
> URL: https://issues.apache.org/jira/browse/CASSANDRA-16430
> Project: Cassandra
> Issue Type: Task
> Components: Local/Config, Observability/Metrics
> Reporter: sharanya
> Priority: Urgent
>
> I have a 9 node cluster of cassandra, with 2gb of data on each node in our
> production environment. We are continuously facing below warnings from one of
> our monitoring tool, but there is no suspicious error from system.log file.
> Also there is sufficient memory available for Heap/server.
>
> warn - Cassandra JVM Memory Pools -Par Survivor Space UsedPoolMemory
> Datasource: Cassandra JVM Memory Pools -Par Survivor Space
> Datapoint: UsedPoolMemory
> Level: warn
> Start: 2021-02-08 10:11:17 GMT
> Duration: 1h 0m
> Value: 100.0
> ClearValue: 1.3631
> Reason: UsedPoolMemory is not >= 90: the current value is 1.3631
> The java memory pool Par Survivor Space on esg3-c-cassv3-03p is now using
> 100.0 % of the maximum.
>
> We see the below message in debug.log file.
> 2021-02-08 08:43:51,310 INFO [ReadStage-1] NoSpamLogger.java:91 - Maximum
> memory usage reached (512.000MiB), cannot allocate chunk of 1.000MiB
> 2021-02-08 08:47:28,344 DEBUG [COMMIT-LOG-ALLOCATOR]
> AbstractCommitLogSegmentManager.java:109 - No segments in reserve; creating a
> fresh one
>
>
> Please help us to fix this issue ASAP.
>
>
>
> Thanks!
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