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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2016/04/27 05:58:12 UTC
[jira] [Assigned] (SPARK-14942) First construct a batch then run
the batch for continuous queries
[ https://issues.apache.org/jira/browse/SPARK-14942?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-14942:
------------------------------------
Assignee: Apache Spark
> First construct a batch then run the batch for continuous queries
> -----------------------------------------------------------------
>
> Key: SPARK-14942
> URL: https://issues.apache.org/jira/browse/SPARK-14942
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.0.0
> Reporter: Liwei Lin
> Assignee: Apache Spark
>
> Currently in {{StreamExecution}}, we first run the batch, then construct the next:
> {code}
> if (dataAvailable) runBatch()
> constructNextBatch()
> {code}
> This is good if we run batches ASAP, where data would get processed in the very next batch:
> !https://cloud.githubusercontent.com/assets/15843379/14779964/2786e698-0b0d-11e6-9d2c-bb41513488b2.png!
> However, if we run batches at trigger like {{ProcessTime("1 minute")}}, data - such as y below - may not get processed in the very next batch i.e. batch 1, but in batch 2:
> !https://cloud.githubusercontent.com/assets/15843379/14779818/6f3bb064-0b0c-11e6-9f16-c1ce4897186b.png!
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