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Paul Lin edited comment on FLINK-20918 at 1/11/21, 3:35 AM: ------------------------------------------------------------ I'd like to take this issue if we all agree. was (Author: paul lin): I'd like to take this issue if we agree. > Avoid excessive flush of Hadoop output stream > --------------------------------------------- > > Key: FLINK-20918 > URL: https://issues.apache.org/jira/browse/FLINK-20918 > Project: Flink > Issue Type: Bug > Affects Versions: 1.12.0, 1.11.3 > Reporter: Paul Lin > Priority: Major > > [HadoopRecoverableFsDataOutputStream#sync|https://github.com/apache/flink/blob/67d167ccd45046fc5ed222ac1f1e3ba5e6ec434b/flink-filesystems/flink-hadoop-fs/src/main/java/org/apache/flink/runtime/fs/hdfs/HadoopRecoverableFsDataOutputStream.java#L123] > calls both `hflush` and `hsync`, whereas `hsync` is an enhanced version of > `hflush`. We should remove the `hflush` call to avoid the excessive flush. -- This message was sent by Atlassian Jira (v8.3.4#803005)