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From "Stefan Podkowinski (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-9953) Snapshot file handlers are not released after snapshot deleted
Date Thu, 06 Aug 2015 09:44:04 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-9953?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14659756#comment-14659756
] 

Stefan Podkowinski commented on CASSANDRA-9953:
-----------------------------------------------

This looks like a duplicate of CASSANDRA-9382, which has been fixed in 2.0.17. 

> Snapshot file handlers are not released after snapshot deleted
> --------------------------------------------------------------
>
>                 Key: CASSANDRA-9953
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9953
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>            Reporter: Imri Zvik
>
> We are seeing a lot of opened file descriptors to deleted snapshots (deleted using nodetool
clearsnapshot):
> {code}
> java    128657 cassandra  DEL    REG              253,2              569272514 /var/lib/cassandra/data/accounts/account_store_data/snapshots/feb5f790-316e-11e5-aec0-472b0d6e3fd4/accounts-account_store_data-jb-264593-Index.db
> java    128657 cassandra  DEL    REG              253,2             1610616657 /var/lib/cassandra/data/accounts/account_store_counters/snapshots/03aa4710-316f-11e5-aec0-472b0d6e3fd4/accounts-account_store_counters-jb-635527-Index.db
> java    128657 cassandra  DEL    REG              253,2             1610613856 /var/lib/cassandra/data/accounts/account_store_counters/snapshots/43c17170-316f-11e5-aec0-472b0d6e3fd4/accounts-account_store_counters-jb-635675-Index.db
> java    128657 cassandra  DEL    REG              253,2             1610613052 /var/lib/cassandra/data/accounts/account_store_counters/snapshots/18e001a0-3170-11e5-aec0-472b0d6e3fd4/accounts-account_store_counters-jb-636200-Index.db
> [root@cassandra002 ~]# lsof -np 128657 |grep -c DEL
> 56682
> {code}
> They are probably created by the routine repair process, but they are never cleared (restarting
the Cassandra process clears them, of course).
> We are seeing these also after all repair processes finished, and no repair process is
running in the cluster.
> There are no errors or fatals in the system.log.
> We are using Datastax community edition 2.0.13, installed from RPMs.



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