[jira] [Comment Edited] (FLINK-5486) Lack of synchronization in BucketingSink#handleRestoredBucketState()

["Ted Yu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-5486?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15822346#comment-15822346 ] 

Ted Yu edited comment on FLINK-5486 at 2/6/17 6:20 PM:
-------------------------------------------------------

Lock on State.bucketStates should be held in the following method:
{code}
  private void handleRestoredBucketState(State<T> restoredState) {
    Preconditions.checkNotNull(restoredState);

    for (BucketState<T> bucketState : restoredState.bucketStates.values()) {
{code}


was (Author: yuzhihong@gmail.com):
Lock on State.bucketStates should be held in the following method:

{code}
  private void handleRestoredBucketState(State<T> restoredState) {
    Preconditions.checkNotNull(restoredState);

    for (BucketState<T> bucketState : restoredState.bucketStates.values()) {
{code}

> Lack of synchronization in BucketingSink#handleRestoredBucketState()
> --------------------------------------------------------------------
>
>                 Key: FLINK-5486
>                 URL: https://issues.apache.org/jira/browse/FLINK-5486
>             Project: Flink
>          Issue Type: Bug
>          Components: Streaming Connectors
>            Reporter: Ted Yu
>
> Here is related code:
> {code}
>       handlePendingFilesForPreviousCheckpoints(bucketState.pendingFilesPerCheckpoint);
>       synchronized (bucketState.pendingFilesPerCheckpoint) {
>         bucketState.pendingFilesPerCheckpoint.clear();
>       }
> {code}
> The handlePendingFilesForPreviousCheckpoints() call should be enclosed inside the synchronization block. Otherwise during the processing of handlePendingFilesForPreviousCheckpoints(), some entries of the map may be cleared.



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