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https://issues.apache.org/jira/browse/CASSANDRA-12864?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hiroyuki Yamada updated CASSANDRA-12864:
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    Description: 
"commitlog_sync_batch_window_in_ms" doesn't seem to be working at least in the 
latest versions in 2.1.16, 2.2.8 and 3.9.

Here is the way to reproduce the bug.

1.  set the following parameters in cassandra.yaml
* commitlog_sync: batch
* commitlog_sync_batch_window_in_ms: 10000 (10s)
2. issue an insert from cqlsh
3. it immediately returns instead of waiting for 10 seconds.

Please refer to the communication in the mailing list.
http://www.mail-archive.com/user@cassandra.apache.org/msg49642.html

  was:
"commitlog_sync_batch_window_in_ms" doesn't seem to be working at least in the 
latest versions in 2.1 and 2.2. (2.1.16 and 2.2.8 respectively)

Here is the way to reproduce the bug.

1.  set the following parameters in cassandra.yaml
* commitlog_sync: batch
* commitlog_sync_batch_window_in_ms: 10000 (10s)
2. issue an insert from cqlsh
3. it immediately returns instead of waiting for 10 seconds.

Please refer to the communication in the mailing list.
http://www.mail-archive.com/user@cassandra.apache.org/msg49642.html


> "commitlog_sync_batch_window_in_ms" parameter is not working correctly in 2.1 
> and 2.2
> -------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-12864
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12864
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>            Reporter: Hiroyuki Yamada
>
> "commitlog_sync_batch_window_in_ms" doesn't seem to be working at least in 
> the latest versions in 2.1.16, 2.2.8 and 3.9.
> Here is the way to reproduce the bug.
> 1.  set the following parameters in cassandra.yaml
> * commitlog_sync: batch
> * commitlog_sync_batch_window_in_ms: 10000 (10s)
> 2. issue an insert from cqlsh
> 3. it immediately returns instead of waiting for 10 seconds.
> Please refer to the communication in the mailing list.
> http://www.mail-archive.com/user@cassandra.apache.org/msg49642.html



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