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https://issues.apache.org/jira/browse/BEAM-8554?focusedWorklogId=339570&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-339570
]
ASF GitHub Bot logged work on BEAM-8554:
----------------------------------------
Author: ASF GitHub Bot
Created on: 06/Nov/19 20:07
Start Date: 06/Nov/19 20:07
Worklog Time Spent: 10m
Work Description: stevekoonce commented on pull request #10013:
[BEAM-8554] Use WorkItemCommitRequest protobuf fields to signal that …
URL: https://github.com/apache/beam/pull/10013
…a WorkItem needs to be broken up
This implements the improvement described in
[BEAM-8554](https://issues.apache.org/jira/browse/BEAM-8554): when the
serialized size of a WorkItemCommitRequest proto is larger than the maximum
size, the commit request will be replaced by a request for a server-side
'truncation' which will cause the WorkItem itself to be broken up and, after
reprocessing, result in multiple, smaller WorkItemCommitRequests that are each
smaller and can be successfully submitted.
I updated an existing unit test and removed a redundant one - the
StreamingDataflowWorkerTest is already configured to run all tests with and
without StreamingEngine and Windmill, so separate, otherwise-identical tests
are not necessary.
------------------------
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Issue Time Tracking
-------------------
Worklog Id: (was: 339570)
Remaining Estimate: 0h
Time Spent: 10m
> Use WorkItemCommitRequest protobuf fields to signal that a WorkItem needs to
> be broken up
> -----------------------------------------------------------------------------------------
>
> Key: BEAM-8554
> URL: https://issues.apache.org/jira/browse/BEAM-8554
> Project: Beam
> Issue Type: Improvement
> Components: runner-dataflow
> Reporter: Steve Koonce
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
> +Background:+
> When a WorkItemCommitRequest is generated that's bigger than the permitted
> size (> ~180 MB), a KeyCommitTooLargeException is logged (_not thrown_) and
> the request is still sent to the service. The service rejects the commit,
> but breaks up input messages that were bundled together and adds them to new,
> smaller work items that will later be pulled and re-tried - likely without
> generating another commit that is too large.
> When a WorkItemCommitRequest is generated that's too large to be sent back to
> the service (> 2 GB), a KeyCommitTooLargeException is thrown and nothing is
> sent back to the service.
>
> +Proposed Improvement+
> In both cases, prevent the doomed, large commit item from being sent back to
> the service. Instead send flags in the commit request signaling that the
> current work item led to a commit that is too large and the work item should
> be broken up.
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