Oleksandr Nitavskyi created FLINK-11396: -------------------------------------------
Summary: MetricStore creates significant GC pressure Key: FLINK-11396 URL: https://issues.apache.org/jira/browse/FLINK-11396 Project: Flink Issue Type: Bug Reporter: Oleksandr Nitavskyi On Flink version 1.6.x we observe a significant increase of the latency in UI. After performance profiling, we have concluded that during UI rendering back-end spends 50% of the time on GC pauses, which means that Flink 1.6.x is not friendly with G1 GC ergonomics configurations. On Flink side, MetricStore creates a huge amount of short living objects for our job, which provokes a lot of Young GC pauses for a non-small job, with around 50 operators and 120 parallelisms. -- This message was sent by Atlassian JIRA (v7.6.3#76005)