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https://issues.apache.org/jira/browse/BEAM-9188?focusedWorklogId=376839&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-376839
]
ASF GitHub Bot logged work on BEAM-9188:
----------------------------------------
Author: ASF GitHub Bot
Created on: 24/Jan/20 14:18
Start Date: 24/Jan/20 14:18
Worklog Time Spent: 10m
Work Description: stankiewicz commented on pull request #10685:
[BEAM-9188] Dataflow's WorkerCustomSources improvement - parallelize creation
of Derived Sources (splitting)
URL: https://github.com/apache/beam/pull/10685
At this moment Custom Source in being split and serialized in sequence. If
there are many splits, it takes time to process all splits.
Example: it takes 2s to calculate size and serialize CassandraSource due to
connection setup and teardown. With 100+ splits, it's a lot of time spent in 1
worker.
This change introduces paralleism to creation of all DerivedSources,
including calculation of size.
------------------------
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| --- | ---
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Issue Time Tracking
-------------------
Worklog Id: (was: 376839)
Remaining Estimate: 0h
Time Spent: 10m
> Improving speed of splitting for Custom Sources
> -----------------------------------------------
>
> Key: BEAM-9188
> URL: https://issues.apache.org/jira/browse/BEAM-9188
> Project: Beam
> Issue Type: Improvement
> Components: runner-dataflow
> Reporter: Radosław Stankiewicz
> Assignee: Radosław Stankiewicz
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
> At this moment Custom Source in being split and serialized in sequence. If
> there are many splits, it takes time to process all splits.
>
> Example: it takes 2s to calculate size and serialize CassandraSource due to
> connection setup and teardown. With 100+ splits, it's a lot of time spent in
> 1 worker.
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