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https://issues.apache.org/jira/browse/CASSANDRA-8281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14224510#comment-14224510
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Benjamin Lerer commented on CASSANDRA-8281:
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I am not sure that I understand your comment.
What I found while digging in the code was that in {{CQLSSTableWriter}} use
{{DatabaseDescriptor}} which is also use by the cassandra server. If the client
mode is not set to true the {{DatabaseDescriptor}} will launch several threads
that are only needed the cassandra server. As those threads are useless as far
as the {{CQLSSTableWriter}} is concerned they should not be started when the
writer is used and by consequence the writer should not need to clause them.
Regarding the problem of Exceptions {{CQLSSTableWriter}} implements
{{Closeable}} so users should use try-with-resources to guaranty that if an
Exception is thrown the writer thread will be closed by the close method of
{{CQLSSTableWriter}}.
> CQLSSTableWriter close does not work
> ------------------------------------
>
> Key: CASSANDRA-8281
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8281
> Project: Cassandra
> Issue Type: Bug
> Components: API
> Environment: Cassandra 2.1.1
> Reporter: Xu Zhongxing
> Assignee: Benjamin Lerer
> Attachments: CASSANDRA-8281.txt
>
>
> I called CQLSSTableWriter.close(). But the program still cannot exit. But the
> same code works fine on Cassandra 2.0.10.
> It seems that CQLSSTableWriter cannot be closed, and blocks the program from
> exit.
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