Repository: hadoop Updated Branches: refs/heads/trunk 404f57f32 -> c970f1d00
HDFS-10280. Document new dfsadmin command -evictWriters. Contributed by Wei-Chiu Chuang. Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/c970f1d0 Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/c970f1d0 Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/c970f1d0 Branch: refs/heads/trunk Commit: c970f1d00525e4273075cff7406dcbd71305abd5 Parents: 404f57f3 Author: Kihwal Lee <[email protected]> Authored: Thu Apr 14 12:45:47 2016 -0500 Committer: Kihwal Lee <[email protected]> Committed: Thu Apr 14 12:45:47 2016 -0500 ---------------------------------------------------------------------- .../src/main/java/org/apache/hadoop/hdfs/tools/DFSAdmin.java | 4 ++++ .../hadoop-hdfs/src/site/markdown/HDFSCommands.md | 2 ++ 2 files changed, 6 insertions(+) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/hadoop/blob/c970f1d0/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSAdmin.java ---------------------------------------------------------------------- diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSAdmin.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSAdmin.java index a35246f..08d3da5 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSAdmin.java +++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSAdmin.java @@ -427,6 +427,7 @@ public class DFSAdmin extends FsShell { "\t[-allowSnapshot <snapshotDir>]\n" + "\t[-disallowSnapshot <snapshotDir>]\n" + "\t[-shutdownDatanode <datanode_host:ipc_port> [upgrade]]\n" + + "\t[-evictWriters <datanode_host:ipc_port>]\n" + "\t[-getDatanodeInfo <datanode_host:ipc_port>]\n" + "\t[-metasave filename]\n" + "\t[-triggerBlockReport [-incremental] <datanode_host:ipc_port>]\n" + @@ -1829,6 +1830,9 @@ public class DFSAdmin extends FsShell { } else if ("-shutdownDatanode".equals(cmd)) { System.err.println("Usage: hdfs dfsadmin" + " [-shutdownDatanode <datanode_host:ipc_port> [upgrade]]"); + } else if ("-evictWriters".equals(cmd)) { + System.err.println("Usage: hdfs dfsadmin" + + " [-evictWriters <datanode_host:ipc_port>]"); } else if ("-getDatanodeInfo".equals(cmd)) { System.err.println("Usage: hdfs dfsadmin" + " [-getDatanodeInfo <datanode_host:ipc_port>]"); http://git-wip-us.apache.org/repos/asf/hadoop/blob/c970f1d0/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/HDFSCommands.md ---------------------------------------------------------------------- diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/HDFSCommands.md b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/HDFSCommands.md index 035abd6..a6c8b4c 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/HDFSCommands.md +++ b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/HDFSCommands.md @@ -385,6 +385,7 @@ Usage: hdfs dfsadmin [-allowSnapshot <snapshotDir>] hdfs dfsadmin [-disallowSnapshot <snapshotDir>] hdfs dfsadmin [-shutdownDatanode <datanode_host:ipc_port> [upgrade]] + hdfs dfsadmin [-evictWriters <datanode_host:ipc_port>] hdfs dfsadmin [-getDatanodeInfo <datanode_host:ipc_port>] hdfs dfsadmin [-metasave filename] hdfs dfsadmin [-triggerBlockReport [-incremental] <datanode_host:ipc_port>] @@ -419,6 +420,7 @@ Usage: | `-allowSnapshot` \<snapshotDir\> | Allowing snapshots of a directory to be created. If the operation completes successfully, the directory becomes snapshottable. See the [HDFS Snapshot Documentation](./HdfsSnapshots.html) for more information. | | `-disallowSnapshot` \<snapshotDir\> | Disallowing snapshots of a directory to be created. All snapshots of the directory must be deleted before disallowing snapshots. See the [HDFS Snapshot Documentation](./HdfsSnapshots.html) for more information. | | `-shutdownDatanode` \<datanode\_host:ipc\_port\> [upgrade] | Submit a shutdown request for the given datanode. See [Rolling Upgrade document](./HdfsRollingUpgrade.html#dfsadmin_-shutdownDatanode) for the detail. | +| `-evictWriters` \<datanode\_host:ipc\_port\> | Make the datanode evict all clients that are writing a block. This is useful if decommissioning is hung due to slow writers. | | `-getDatanodeInfo` \<datanode\_host:ipc\_port\> | Get the information about the given datanode. See [Rolling Upgrade document](./HdfsRollingUpgrade.html#dfsadmin_-getDatanodeInfo) for the detail. | | `-metasave` filename | Save Namenode's primary data structures to *filename* in the directory specified by hadoop.log.dir property. *filename* is overwritten if it exists. *filename* will contain one line for each of the following<br/>1. Datanodes heart beating with Namenode<br/>2. Blocks waiting to be replicated<br/>3. Blocks currently being replicated<br/>4. Blocks waiting to be deleted | | `-triggerBlockReport` `[-incremental]` \<datanode\_host:ipc\_port\> | Trigger a block report for the given datanode. If 'incremental' is specified, it will be otherwise, it will be a full block report. |
