[jira] [Commented] (CASSANDRA-12864) "commitlog_sync_batch_window_in_ms" parameter is not working correctly in 2.1, 2.2 and 3.9

["Benjamin Lerer (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-12864?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15621821#comment-15621821 ] 

Benjamin Lerer commented on CASSANDRA-12864:
--------------------------------------------

It looks like [~benedict] already answered your question in this email:
bq. {{commitlog_sync_batch_window_in_ms}} is the maximum length of time that queries may be batched together
for, not the minimum.


> "commitlog_sync_batch_window_in_ms" parameter is not working correctly in 2.1, 2.2 and 3.9
> ------------------------------------------------------------------------------------------
>
>                 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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