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Posted to commits@cassandra.apache.org by "Li (JIRA)" <ji...@apache.org> on 2018/11/07 23:40:00 UTC
[jira] [Commented] (CASSANDRA-14495) Memory Leak /High Memory usage
post 3.11.2 upgrade
[ https://issues.apache.org/jira/browse/CASSANDRA-14495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16679078#comment-16679078 ]
Li commented on CASSANDRA-14495:
--------------------------------
What if the memory usage already hits over 95% and still keeps growing? No latency or throughput impact yet.
> Memory Leak /High Memory usage post 3.11.2 upgrade
> --------------------------------------------------
>
> Key: CASSANDRA-14495
> URL: https://issues.apache.org/jira/browse/CASSANDRA-14495
> Project: Cassandra
> Issue Type: Bug
> Components: Metrics
> Reporter: Abdul Patel
> Priority: Major
> Attachments: cas_heap.txt
>
>
> Hi All,
>
> I recently upgraded my non prod cassandra cluster( 4 nodes single DC) from 3.10 to 3.11.2 version.
> No issues reported apart from only nodetool info reporting 80% usage .
> I intially had 16GB memory on each node, later i bumped up to 20GB, and rebooted all nodes.
> Waited for an week and now again i have seen memory usage more than 80% , 16GB + .
> this means some memory leaks are happening over the time.
> Any one has faced such issue or do we have any workaround ? my 3.11.2 version upgrade rollout has been halted because of this bug.
> ===================================================================
> ID : 65b64f5a-7fe6-4036-94c8-8da9c57718cc
> Gossip active : true
> Thrift active : true
> Native Transport active: true
> Load : 985.24 MiB
> Generation No : 1526923117
> Uptime (seconds) : 1097684
> Heap Memory (MB) : 16875.64 / 20480.00
> Off Heap Memory (MB) : 20.42
> Data Center : DC7
> Rack : rac1
> Exceptions : 0
> Key Cache : entries 3569, size 421.44 KiB, capacity 100 MiB, 7931933 hits, 8098632 requests, 0.979 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
> Chunk Cache : entries 2361, size 147.56 MiB, capacity 3.97 GiB, 2412803 misses, 72594047 requests, 0.967 recent hit rate, NaN microseconds miss latency
> Percent Repaired : 99.88086234106282%
> Token : (invoke with -T/--tokens to see all 256 tokens)
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