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https://issues.apache.org/jira/browse/BEAM-4049?focusedWorklogId=91351&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-91351
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ASF GitHub Bot logged work on BEAM-4049:
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Author: ASF GitHub Bot
Created on: 16/Apr/18 14:40
Start Date: 16/Apr/18 14:40
Worklog Time Spent: 10m
Work Description: echauchot commented on issue #5112: [BEAM-4049] Improve
CassandraIO write throughput by performing async queries
URL: https://github.com/apache/beam/pull/5112#issuecomment-381622622
@adejanovski
> I'm not sure why the tests are failing in Jenkins now since I just changed
the comment style on CONCURRENT_ASYNC_QUERIES.
Maybe it's unrelated to my push ?
I don't know if it is the case here, but please know for the future that
sometimes the jenkins build hits the misconfigured beam5 machine; so errors
might be unrelated to the code sometimes
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Issue Time Tracking
-------------------
Worklog Id: (was: 91351)
Time Spent: 3h 40m (was: 3.5h)
> Improve write throughput of CassandraIO
> ---------------------------------------
>
> Key: BEAM-4049
> URL: https://issues.apache.org/jira/browse/BEAM-4049
> Project: Beam
> Issue Type: Improvement
> Components: io-java-cassandra
> Affects Versions: 2.4.0
> Reporter: Alexander Dejanovski
> Assignee: Alexander Dejanovski
> Priority: Major
> Labels: performance
> Time Spent: 3h 40m
> Remaining Estimate: 0h
>
> The CassandraIO currently uses the mapper to perform writes in a synchronous
> fashion.
> This implies that writes are serialized and is a very suboptimal way of
> writing to Cassandra.
> The IO should use the saveAsync() method instead of save() and should wait
> for completion each time 100 queries are in flight, in order to avoid
> overwhelming clusters.
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