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https://issues.apache.org/jira/browse/FLUME-2233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13814258#comment-13814258
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Hari Shreedharan commented on FLUME-2233:
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Note sure what you mean? Are you suggesting we move this to just the commit and
ask that the users specify a lower byteCapacityBufferPercentage to take care of
the events currently in the pipeline?
> MemoryChannel lock contention on every put due to bytesRemaining Semaphore
> --------------------------------------------------------------------------
>
> Key: FLUME-2233
> URL: https://issues.apache.org/jira/browse/FLUME-2233
> Project: Flume
> Issue Type: Bug
> Reporter: Hari Shreedharan
> Assignee: Hari Shreedharan
> Attachments: FLUME-2233.patch, FLUME-2233.patch, FLUME-2233.patch
>
>
> This semaphore is checked every time there is a put (unlike the
> queueRemaining semaphore which is checked only on transaction commits),
> causing the channel to slow down, even when the user does not care about
> memory usage.
> We must add a new parameter to make sure that we look at bytesRemaining only
> when required which the user can disable if memory is not something they
> worry about because they know the channel size will be sufficiently small. By
> default, we will need to still check bytesRemaining to avoid breaking
> existing configurations.
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