ZanderXu created HDFS-17388: ------------------------------- Summary: [FGL] Create RPC supports this fine-grained locking I Key: HDFS-17388 URL: https://issues.apache.org/jira/browse/HDFS-17388 Project: Hadoop HDFS Issue Type: Sub-task Reporter: ZanderXu
The create RPC just involves directory tree if it creates a new file, and most scenes are like this. It involves blocks only if the file is existing and it tries to overwrite it. So in most scenarios, the create RPC just needs FS lock. The current implementation just holds the global write lock, so in order for the improvement to be better accepted, the first step is just to replace the lock mode without changing logic. We can minimize the scope of the global BM lock in the second step. -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-dev-h...@hadoop.apache.org