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https://issues.apache.org/jira/browse/FLINK-4534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16596464#comment-16596464
]
ASF GitHub Bot commented on FLINK-4534:
---------------------------------------
zentol closed pull request #4482: [FLINK-4534] Fix synchronization issue in
BucketingSink
URL: https://github.com/apache/flink/pull/4482
This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:
As this is a foreign pull request (from a fork), the diff is supplied
below (as it won't show otherwise due to GitHub magic):
diff --git
a/flink-connectors/flink-connector-filesystem/src/main/java/org/apache/flink/streaming/connectors/fs/bucketing/BucketingSink.java
b/flink-connectors/flink-connector-filesystem/src/main/java/org/apache/flink/streaming/connectors/fs/bucketing/BucketingSink.java
index faf3c566803..2472387ed44 100644
---
a/flink-connectors/flink-connector-filesystem/src/main/java/org/apache/flink/streaming/connectors/fs/bucketing/BucketingSink.java
+++
b/flink-connectors/flink-connector-filesystem/src/main/java/org/apache/flink/streaming/connectors/fs/bucketing/BucketingSink.java
@@ -422,9 +422,11 @@ private void initFileSystem() throws IOException {
@Override
public void close() throws Exception {
- if (state != null) {
- for (Map.Entry<String, BucketState<T>> entry :
state.bucketStates.entrySet()) {
- closeCurrentPartFile(entry.getValue());
+ synchronized (state.bucketStates) {
+ if (state != null) {
+ for (Map.Entry<String, BucketState<T>> entry :
state.bucketStates.entrySet()) {
+ closeCurrentPartFile(entry.getValue());
+ }
}
}
}
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> Lack of synchronization in BucketingSink#restoreState()
> -------------------------------------------------------
>
> Key: FLINK-4534
> URL: https://issues.apache.org/jira/browse/FLINK-4534
> Project: Flink
> Issue Type: Bug
> Components: Streaming Connectors
> Reporter: Ted Yu
> Assignee: zhangminglei
> Priority: Major
> Labels: pull-request-available
>
> Iteration over state.bucketStates is protected by synchronization in other
> methods, except for the following in restoreState():
> {code}
> for (BucketState<T> bucketState : state.bucketStates.values()) {
> {code}
> and following in close():
> {code}
> for (Map.Entry<String, BucketState<T>> entry :
> state.bucketStates.entrySet()) {
> closeCurrentPartFile(entry.getValue());
> {code}
> w.r.t. bucketState.pendingFilesPerCheckpoint , there is similar issue
> starting line 752:
> {code}
> Set<Long> pastCheckpointIds =
> bucketState.pendingFilesPerCheckpoint.keySet();
> LOG.debug("Moving pending files to final location on restore.");
> for (Long pastCheckpointId : pastCheckpointIds) {
> {code}
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