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From "Xiao Li (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-22956) Union Stream Failover Cause `IllegalStateException`
Date Fri, 23 Feb 2018 06:33:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-22956?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Xiao Li updated SPARK-22956:
----------------------------
    Fix Version/s:     (was: 2.3.1)
                   2.3.0

> 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
>            Assignee: Li Yuanjian
>            Priority: Major
>             Fix For: 2.3.0, 2.4.0
>
>
> 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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