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Posted to issues@flink.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2018/12/10 15:44:01 UTC
[jira] [Commented] (FLINK-10205) Batch Job: InputSplit Fault
tolerant for DataSourceTask
[ https://issues.apache.org/jira/browse/FLINK-10205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16714953#comment-16714953 ]
ASF GitHub Bot commented on FLINK-10205:
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StefanRRichter commented on a change in pull request #6684: [FLINK-10205] Batch Job: InputSplit Fault tolerant for DataSource…
URL: https://github.com/apache/flink/pull/6684#discussion_r240253142
##########
File path: flink-runtime/src/main/java/org/apache/flink/runtime/executiongraph/ExecutionVertex.java
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@@ -590,6 +604,15 @@ public Execution resetForNewExecution(final long timestamp, final long originati
this.currentExecution = newExecution;
+ synchronized (this.inputSplits){
+ for (InputSplit split: this.inputSplits){
Review comment:
General formatting/style, this line (and others) lack some whitespaces, e.g. `split :` and `) {`. Please have another look at the formatting.
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> Batch Job: InputSplit Fault tolerant for DataSourceTask
> -------------------------------------------------------
>
> Key: FLINK-10205
> URL: https://issues.apache.org/jira/browse/FLINK-10205
> Project: Flink
> Issue Type: Sub-task
> Components: JobManager
> Affects Versions: 1.6.1, 1.6.2, 1.7.0
> Reporter: JIN SUN
> Assignee: JIN SUN
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.8.0
>
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> Today DataSource Task pull InputSplits from JobManager to achieve better performance, however, when a DataSourceTask failed and rerun, it will not get the same splits as its previous version. this will introduce inconsistent result or even data corruption.
> Furthermore, if there are two executions run at the same time (in batch scenario), this two executions should process same splits.
> we need to fix the issue to make the inputs of a DataSourceTask deterministic. The propose is save all splits into ExecutionVertex and DataSourceTask will pull split from there.
> document:
> [https://docs.google.com/document/d/1FdZdcA63tPUEewcCimTFy9Iz2jlVlMRANZkO4RngIuk/edit?usp=sharing]
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