HDFS-11628. Clarify the behavior of HDFS Mover in documentation. Contributed by Xiaobing Zhou.
Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/ea38aa72 Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/ea38aa72 Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/ea38aa72 Branch: refs/heads/branch-2.7 Commit: ea38aa727ac67b9db0ff0b500f6a99ed44ab0bc4 Parents: 79f7bfb Author: Xiaobing Zhou <[email protected]> Authored: Wed Apr 5 15:33:08 2017 -0700 Committer: Arpit Agarwal <[email protected]> Committed: Wed Apr 5 15:34:40 2017 -0700 ---------------------------------------------------------------------- .../hadoop-hdfs/src/site/markdown/ArchivalStorage.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/hadoop/blob/ea38aa72/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/ArchivalStorage.md ---------------------------------------------------------------------- diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/ArchivalStorage.md b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/ArchivalStorage.md index 8eb89bf..b996d48 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/ArchivalStorage.md +++ b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/ArchivalStorage.md @@ -107,7 +107,7 @@ The effective storage policy can be retrieved by the "[`dfsadmin -getStoragePoli Mover - A New Data Migration Tool --------------------------------- -A new data migration tool is added for archiving data. The tool is similar to Balancer. It periodically scans the files in HDFS to check if the block placement satisfies the storage policy. For the blocks violating the storage policy, it moves the replicas to a different storage type in order to fulfill the storage policy requirement. +A new data migration tool is added for archiving data. The tool is similar to Balancer. It periodically scans the files in HDFS to check if the block placement satisfies the storage policy. For the blocks violating the storage policy, it moves the replicas to a different storage type in order to fulfill the storage policy requirement. Note that it always tries to move block replicas within the same node whenever possible. If that is not possible (e.g. when a node doesnât have the target storage type) then it will copy the block replicas to another node over the network. * Command: --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
