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https://issues.apache.org/jira/browse/APEXCORE-609?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15963340#comment-15963340
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ASF GitHub Bot commented on APEXCORE-609:
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GitHub user PramodSSImmaneni opened a pull request:
https://github.com/apache/apex-core/pull/507
APEXCORE-609 Backpressure when spooling is disabled.
The publisher is suspended if ahead of subscriber by maximum number of
blocks. This doesn't yet address the issue of blocks being overallocated when
spooling is disabled. That will be addressed in the future.
@vrozov please see
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/PramodSSImmaneni/apex-core APEXCORE-609
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/apex-core/pull/507.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #507
----
commit a7ea0b434538effb253196826da639df22ced258
Author: Pramod Immaneni <pra...@datatorrent.com>
Date: 2017-04-10T18:48:31Z
APEXCORE-609 Backpressure when spooling is disabled. The publisher is
suspended if ahead of subscriber by maximum number of blocks.
----
> Support for back pressure in buffer server when spooling is disabled (out of
> memory issue)
> ------------------------------------------------------------------------------------------
>
> Key: APEXCORE-609
> URL: https://issues.apache.org/jira/browse/APEXCORE-609
> Project: Apache Apex Core
> Issue Type: Improvement
> Components: Buffer Server
> Reporter: Pramod Immaneni
> Assignee: Pramod Immaneni
>
> When buffer spooling is disabled and the specified buffer in memory limit is
> reached, because of fault tolerance requirements, additional memory is
> allocated to store the new data. This causes container to run out of memory.
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