Arpit Agarwal created HDFS-7090: ----------------------------------- Summary: Use unbuffered writes when persisting in-memory replicas Key: HDFS-7090 URL: https://issues.apache.org/jira/browse/HDFS-7090 Project: Hadoop HDFS Issue Type: Sub-task Components: datanode Affects Versions: HDFS-6581 Reporter: Arpit Agarwal
The LazyWriter thread just uses {{FileUtils.copyFile}} to copy block files to persistent storage. It would be better to use unbuffered writes to avoid churning page cache. -- This message was sent by Atlassian JIRA (v6.3.4#6332)