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Posted to issues@spark.apache.org by "Wenchen Fan (JIRA)" <ji...@apache.org> on 2018/02/01 12:41:00 UTC
[jira] [Assigned] (SPARK-23202) Add new API in DataSourceWriter:
onDataWriterCommit
[ https://issues.apache.org/jira/browse/SPARK-23202?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wenchen Fan reassigned SPARK-23202:
-----------------------------------
Assignee: Gengliang Wang
> Add new API in DataSourceWriter: onDataWriterCommit
> ---------------------------------------------------
>
> Key: SPARK-23202
> URL: https://issues.apache.org/jira/browse/SPARK-23202
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.3.0
> Reporter: Gengliang Wang
> Assignee: Gengliang Wang
> Priority: Major
> Fix For: 2.4.0
>
>
> The current DataSourceWriter API makes it hard to implement {{onTaskCommit(taskCommit: TaskCommitMessage)}} in {{FileCommitProtocol}}.
> In general, on receiving commit message, driver can start processing messages(e.g. persist messages into files) before all the messages are collected.
> The proposal to add a new API:
> {{add(WriterCommitMessage message)}}: Handles a commit message on receiving from a successful data writer.
> This should make the whole API of DataSourceWriter compatible with {{FileCommitProtocol}}, and more flexible.
> There was another radical attempt in [#20386|https://github.com/apache/spark/pull/20386]. Creating a new API as [#20454|https://github.com/apache/spark/pull/20454] is more reasonable.
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