[ https://issues.apache.org/jira/browse/HDFS-10911?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Brahma Reddy Battula updated HDFS-10911: ---------------------------------------- Target Version/s: 3.4.0 (was: 3.3.0) Bulk update: moved all 3.3.0 non-blocker issues, please move back if it is a blocker. > Change edit log OP_UPDATE_BLOCKS to store delta blocks only. > ------------------------------------------------------------ > > Key: HDFS-10911 > URL: https://issues.apache.org/jira/browse/HDFS-10911 > Project: Hadoop HDFS > Issue Type: Improvement > Components: namenode > Affects Versions: 2.7.3, 3.0.0-alpha1 > Reporter: Lei (Eddy) Xu > Assignee: Lei (Eddy) Xu > Priority: Major > > Every time a HDFS client {{close}} or {{hflush}} an open file, NameNode > enumerates all the blocks and stores then into edit log (OP_UPDATE_BLOCKS). > It would cause problem when the client is appending a large file frequently > (i.e., WAL). > Because HDFS is append only, we can only store the blocks that have been > changed (delta blocks) in edit log. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org