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https://issues.apache.org/jira/browse/CASSANDRA-11594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15422353#comment-15422353
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Benjamin Lerer commented on CASSANDRA-11594:
--------------------------------------------
I think we should ty to narrow down the problem as we cannot reproduce the
problem on our side.
Do you have identified what is causing the increase of open files? normal
activity, compaction or repair.
Do you have multiple keyspaces? Is only one affected by this problem? what is
your Operating System and File System?
> Too many open files on directories
> ----------------------------------
>
> Key: CASSANDRA-11594
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11594
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: n0rad
> Priority: Critical
> Attachments: openfiles.zip, screenshot.png
>
>
> I have a 6 nodes cluster in prod in 3 racks.
> each node :
> - 4Gb commitlogs on 343 files
> - 275Gb data on 504 files
> On saturday, 1 node in each rack crash with with too many open files (seems
> to be the similar node in each rack).
> {code}
> lsof -n -p $PID give me 66899 out of 65826 max
> {code}
> it contains 64527 open directories (2371 uniq)
> a part of the list :
> {code}
> java 19076 root 2140r DIR 8,17 143360 4386718705
> /opt/stage2/pod-cassandra-aci-cassandra/rootfs/data/keyspaces/email_logs_query/emails-2d4abd00e9ea11e591199d740e07bd95
> java 19076 root 2141r DIR 8,17 143360 4386718705
> /opt/stage2/pod-cassandra-aci-cassandra/rootfs/data/keyspaces/email_logs_query/emails-2d4abd00e9ea11e591199d740e07bd95
> java 19076 root 2142r DIR 8,17 143360 4386718705
> /opt/stage2/pod-cassandra-aci-cassandra/rootfs/data/keyspaces/email_logs_query/emails-2d4abd00e9ea11e591199d740e07bd95
> java 19076 root 2143r DIR 8,17 143360 4386718705
> /opt/stage2/pod-cassandra-aci-cassandra/rootfs/data/keyspaces/email_logs_query/emails-2d4abd00e9ea11e591199d740e07bd95
> java 19076 root 2144r DIR 8,17 143360 4386718705
> /opt/stage2/pod-cassandra-aci-cassandra/rootfs/data/keyspaces/email_logs_query/emails-2d4abd00e9ea11e591199d740e07bd95
> java 19076 root 2145r DIR 8,17 143360 4386718705
> /opt/stage2/pod-cassandra-aci-cassandra/rootfs/data/keyspaces/email_logs_query/emails-2d4abd00e9ea11e591199d740e07bd95
> java 19076 root 2146r DIR 8,17 143360 4386718705
> /opt/stage2/pod-cassandra-aci-cassandra/rootfs/data/keyspaces/email_logs_query/emails-2d4abd00e9ea11e591199d740e07bd95
> java 19076 root 2147r DIR 8,17 143360 4386718705
> /opt/stage2/pod-cassandra-aci-cassandra/rootfs/data/keyspaces/email_logs_query/emails-2d4abd00e9ea11e591199d740e07bd95
> java 19076 root 2148r DIR 8,17 143360 4386718705
> /opt/stage2/pod-cassandra-aci-cassandra/rootfs/data/keyspaces/email_logs_query/emails-2d4abd00e9ea11e591199d740e07bd95
> java 19076 root 2149r DIR 8,17 143360 4386718705
> /opt/stage2/pod-cassandra-aci-cassandra/rootfs/data/keyspaces/email_logs_query/emails-2d4abd00e9ea11e591199d740e07bd95
> java 19076 root 2150r DIR 8,17 143360 4386718705
> /opt/stage2/pod-cassandra-aci-cassandra/rootfs/data/keyspaces/email_logs_query/emails-2d4abd00e9ea11e591199d740e07bd95
> java 19076 root 2151r DIR 8,17 143360 4386718705
> /opt/stage2/pod-cassandra-aci-cassandra/rootfs/data/keyspaces/email_logs_query/emails-2d4abd00e9ea11e591199d740e07bd95
> java 19076 root 2152r DIR 8,17 143360 4386718705
> /opt/stage2/pod-cassandra-aci-cassandra/rootfs/data/keyspaces/email_logs_query/emails-2d4abd00e9ea11e591199d740e07bd95
> java 19076 root 2153r DIR 8,17 143360 4386718705
> /opt/stage2/pod-cassandra-aci-cassandra/rootfs/data/keyspaces/email_logs_query/emails-2d4abd00e9ea11e591199d740e07bd95
> java 19076 root 2154r DIR 8,17 143360 4386718705
> /opt/stage2/pod-cassandra-aci-cassandra/rootfs/data/keyspaces/email_logs_query/emails-2d4abd00e9ea11e591199d740e07bd95
> java 19076 root 2155r DIR 8,17 143360 4386718705
> /opt/stage2/pod-cassandra-aci-cassandra/rootfs/data/keyspaces/email_logs_query/emails-2d4abd00e9ea11e591199d740e07bd95
> {code}
> The 3 others nodes crashes 4 hours later
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