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https://issues.apache.org/jira/browse/FLINK-7585?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16153798#comment-16153798
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Hai Zhou commented on FLINK-7585:
---------------------------------
Hi [~Zentol],
SimpleCounter is not thread safe.
Whether we need to modify the type of *count* to LongAdder, to ensure thread
safety ？
Cheers,
Hai Zhou
> SimpleCounter not thread safe
> -----------------------------
>
> Key: FLINK-7585
> URL: https://issues.apache.org/jira/browse/FLINK-7585
> Project: Flink
> Issue Type: Bug
> Components: Build System, Metrics
> Affects Versions: 1.3.2
> Reporter: Hai Zhou
> Assignee: Hai Zhou
> Fix For: 1.4.0, 1.3.3
>
>
> package org.apache.flink.metrics;
> /**
> * A simple low-overhead {@link org.apache.flink.metrics.Counter} that is not
> thread-safe.
> */
> public class SimpleCounter implements Counter {
> /** the current count. */
> private long count;
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