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https://issues.apache.org/jira/browse/BEAM-3485?focusedWorklogId=91744&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-91744
]
ASF GitHub Bot logged work on BEAM-3485:
----------------------------------------
Author: ASF GitHub Bot
Created on: 17/Apr/18 13:18
Start Date: 17/Apr/18 13:18
Worklog Time Spent: 10m
Work Description: aromanenko-dev commented on a change in pull request
#5124: [BEAM-3485] Fix split generation for Cassandra clusters
URL: https://github.com/apache/beam/pull/5124#discussion_r182013212
##########
File path:
sdks/java/io/cassandra/src/main/java/org/apache/beam/sdk/io/cassandra/CassandraIO.java
##########
@@ -196,6 +197,11 @@ private CassandraIO() {}
return builder().setConsistencyLevel(consistencyLevel).build();
}
+ public Read<T> withMinNumberOfSplits(Integer minNumberOfSplits) {
+ checkArgument(minNumberOfSplits != null, "minNumberOfSplits can not be
null");
Review comment:
We also need to check that this number is greater than 0.
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Issue Time Tracking
-------------------
Worklog Id: (was: 91744)
Time Spent: 2h (was: 1h 50m)
> CassandraIO.read() splitting produces invalid queries
> -----------------------------------------------------
>
> Key: BEAM-3485
> URL: https://issues.apache.org/jira/browse/BEAM-3485
> Project: Beam
> Issue Type: Bug
> Components: io-java-cassandra
> Reporter: Eugene Kirpichov
> Assignee: Alexander Dejanovski
> Priority: Major
> Time Spent: 2h
> Remaining Estimate: 0h
>
> See
> [https://stackoverflow.com/questions/48090668/how-to-increase-dataflow-read-parallelism-from-cassandra/48131264?noredirect=1#comment83548442_48131264]
> As the question author points out, the error is likely that token($pk) should
> be token(pk). This was likely masked by BEAM-3424 and BEAM-3425, and the
> splitting code path effectively was never invoked, and was broken from the
> first PR - so there are likely other bugs.
> When testing this issue, we must ensure good code coverage in an IT against a
> real Cassandra instance.
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