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https://issues.apache.org/jira/browse/CASSANDRA-11155?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16047744#comment-16047744
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Thomas Steinmaurer commented on CASSANDRA-11155:
------------------------------------------------
Additionally, once the first snapshot cron kicks in, while a cleanup is
running, we start to see a log spam similar to:
{noformat}
WARN [RMI TCP Connection(168)-127.0.0.1] 2017-06-13 11:11:23,832
NoSpamLogger.java:94 - Spinning trying to capture readers ...
{noformat}
> Scrub/Cleanup block snapshots
> -----------------------------
>
> Key: CASSANDRA-11155
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11155
> Project: Cassandra
> Issue Type: Bug
> Components: Compaction
> Environment: Linux Ubuntu hosts, Cassandra 2.1.12
> Reporter: Victor Igumnov
> Attachments: cass-scrub-threaddump.bz2
>
>
> I have noticed that when running the cleanup or scrub process on Cassandra it
> prevents nodetool from taking a snapshot. The snapshot process essentially
> blocks until the scrub or cleanup is complete. I am not exactly sure if this
> is intended behavior.
> For the record, this observed behavior does not apply to repairs and major
> compactions.
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