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Chengwei Wang edited comment on HDFS-15493 at 7/31/20, 9:21 AM: ---------------------------------------------------------------- Submit v003 patch [^HDFS-15493.003.patch] Base on two single thread executors, removed update lock. Tested this patch twice: {code:java} Test1. 20/07/31 16:12:17 INFO namenode.FSImageFormatPBINode: Completed loading all INodeDirectory sub-sections 20/07/31 16:12:36 INFO namenode.FSImageFormatPBINode: Completed update blocks map and name cache, total waiting duration: 18615 20/07/31 16:12:37 INFO namenode.FSImageFormatProtobuf: Loaded FSImage in 431 seconds. Test2. 20/07/31 16:39:20 INFO namenode.FSImageFormatPBINode: Completed loading all INodeDirectory sub-sections 20/07/31 16:39:27 INFO namenode.FSImageFormatPBINode: Completed update blocks map and name cache, total waiting duration: 7151 20/07/31 16:39:28 INFO namenode.FSImageFormatProtobuf: Loaded FSImage in 425 seconds. {code} was (Author: smarthan): Submit v003 patch [^HDFS-15493.003.patch] Base on two single thread executors, removed update lock. Tested this patch twice: {code:java} Test1. 20/07/31 16:12:17 INFO namenode.FSImageFormatPBINode: Completed loading all INodeDirectory sub-sections 20/07/31 16:12:36 INFO namenode.FSImageFormatPBINode: Completed update blocks map and name cache, total waiting duration: 18615 20/07/31 16:12:37 INFO namenode.FSImageFormatProtobuf: Loaded FSImage in 431 seconds. Test2. 20/07/31 16:39:20 INFO namenode.FSImageFormatPBINode: Completed loading all INodeDirectory sub-sections 20/07/31 16:39:27 INFO namenode.FSImageFormatPBINode: Completed update blocks map and name cache, total waiting duration: 7151 20/07/31 16:39:28 INFO namenode.FSImageFormatProtobuf: Loaded FSImage in 425 seconds. {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, 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