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https://issues.apache.org/jira/browse/BEAM-4049?focusedWorklogId=152063&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-152063
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ASF GitHub Bot logged work on BEAM-4049:
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Author: ASF GitHub Bot
Created on: 07/Oct/18 12:13
Start Date: 07/Oct/18 12:13
Worklog Time Spent: 10m
Work Description: adejanovski commented on issue #5112: [BEAM-4049]
Improve CassandraIO write throughput by performing async queries
URL: https://github.com/apache/beam/pull/5112#issuecomment-427648627
How was the 2.5.0 packages built? With Maven or Gradle?
In this PR, I used a method from the datastax Java driver which relies on
Guava's ListenableFuture class. Since beam's pom relocated all of Guava into a
custom package, it gave the error you mentioned.
As a workaround, I added an exception in the pom file to avoid relocating
ListenableFuture.
I think I understood the project was moving to Gradle and as I didn't touch
the Gradle build, ListenableFuture might still be relocated there.
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Issue Time Tracking
-------------------
Worklog Id: (was: 152063)
Time Spent: 8h 10m (was: 8h)
> 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
> Fix For: 2.5.0
>
> Time Spent: 8h 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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