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Chengwei Wang commented on HDFS-15493: -------------------------------------- Submit a new patch [^HDFS-15493.005.patch] Removed the switch of this feature and simplified some related code. > Update block map and name cache in parallel while loading fsimage. > ------------------------------------------------------------------ > > Key: HDFS-15493 > URL: https://issues.apache.org/jira/browse/HDFS-15493 > Project: Hadoop HDFS > Issue Type: Improvement > Components: namenode > Reporter: Chengwei Wang > Priority: Major > Attachments: HDFS-15493.001.patch, HDFS-15493.002.patch, > HDFS-15493.003.patch, HDFS-15493.004.patch, HDFS-15493.005.patch, > fsimage-loading.log > > > While loading INodeDirectorySection of fsimage, it will update name cache and > block map after added inode file to inode directory. It would reduce time > cost of fsimage loading to enable these steps run in parallel. > In our test case, with patch HDFS-13694 and HDFS-14617, the time cost to load > fsimage (220M files & 240M blocks) is 470s, with this patch , the time cost > reduc to 410s. -- 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