[jira] [Closed] (FLINK-3998) Access to gauges and counters in StatsDReporter#report() is not properly synchronized

["Chesnay Schepler (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-3998?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chesnay Schepler closed FLINK-3998.
-----------------------------------
    Resolution: Not A Problem

Exceptions caused by missing synchronization are catched, and the reporting delayed to the next round. 

This case can only occur on startup/teardown of the job/task/operator. During this period, synchronization may produce additional overhead that should be avoided.

> Access to gauges and counters in StatsDReporter#report() is not properly synchronized
> -------------------------------------------------------------------------------------
>
>                 Key: FLINK-3998
>                 URL: https://issues.apache.org/jira/browse/FLINK-3998
>             Project: Flink
>          Issue Type: Bug
>            Reporter: Ted Yu
>
> {code}
>     for (Map.Entry<Gauge<?>, String> entry : gauges.entrySet()) {
>       reportGauge(entry.getValue(), entry.getKey());
>     }
>     for (Map.Entry<Counter, String> entry : counters.entrySet()) {
>       reportCounter(entry.getValue(), entry.getKey());
> {code}
> Access to gauges and counters should be protected by lock on AbstractReporter.this



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