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Posted to commits@beam.apache.org by "Ismaël Mejía (JIRA)" <ji...@apache.org> on 2018/04/16 13:18:00 UTC

[jira] [Assigned] (BEAM-4049) Improve write throughput of CassandraIO

     [ https://issues.apache.org/jira/browse/BEAM-4049?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ismaël Mejía reassigned BEAM-4049:
----------------------------------

    Assignee: Alexander Dejanovski  (was: Jean-Baptiste Onofré)

> 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 10m
>  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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