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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2018/01/04 12:00:15 UTC
[jira] [Assigned] (SPARK-22956) Union Stream Failover Cause
`IllegalStateException`
[ https://issues.apache.org/jira/browse/SPARK-22956?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-22956:
------------------------------------
Assignee: (was: Apache Spark)
> Union Stream Failover Cause `IllegalStateException`
> ---------------------------------------------------
>
> Key: SPARK-22956
> URL: https://issues.apache.org/jira/browse/SPARK-22956
> Project: Spark
> Issue Type: Bug
> Components: Structured Streaming
> Affects Versions: 2.1.0
> Reporter: Li Yuanjian
>
> When we union 2 streams from kafka or other sources, while one of them have no continues data coming and in the same time task restart, this will cause an `IllegalStateException`. This mainly cause because the code in [MicroBatchExecution|https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/MicroBatchExecution.scala#L190] , while one stream has no continues data, its comittedOffset same with availableOffset during `populateStartOffsets`, and `currentPartitionOffsets` not properly handled in KafkaSource. Also, maybe we should also consider this scenario in other Source.
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