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/9f20532e Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/9f20532e Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/9f20532e Branch: refs/heads/branch-2 Commit: 9f20532ef5824f5d24af0cb464ab42203b85ac11 Parents: 0a7ec1f Author: Xiaobing Zhou <[email protected]> Authored: Wed Apr 5 15:33:08 2017 -0700 Committer: Arpit Agarwal <[email protected]> Committed: Wed Apr 5 15:33:19 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/9f20532e/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 44cb9c9..b3720cc 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/ArchivalStorage.md +++ b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/ArchivalStorage.md @@ -96,7 +96,7 @@ The effective storage policy can be retrieved by the "[`storagepolicies -getStor 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]
