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HDFS-8923. Add -source flag to balancer usage message. Contributed by Chris Trezzo

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Tsz-Wo Nicholas Sze 2016-02-18 18:18:12 -08:00
parent 8eee59ce6b
commit 46f7790236
3 changed files with 7 additions and 0 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -2817,6 +2817,9 @@ Release 2.7.3 - UNRELEASED
HDFS-4946. Allow preferLocalNode in BlockPlacementPolicyDefault to be
configurable (James Kinley and Nathan Roberts via kihwal)
HDFS-8923. Add -source flag to balancer usage message. (Chris Trezzo
via szetszwo)
OPTIMIZATIONS
BUG FIXES

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/Balancer.java
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@ -179,6 +179,8 @@ public class Balancer {
+ "\tExcludes the specified datanodes."
+ "\n\t[-include [-f <hosts-file> | <comma-separated list of hosts>]]"
+ "\tIncludes only the specified datanodes."
+ "\n\t[-source [-f <hosts-file> | <comma-separated list of hosts>]]"
+ "\tPick only the specified datanodes as source nodes."
+ "\n\t[-blockpools <comma-separated list of blockpool ids>]"
+ "\tThe balancer will only run on blockpools included in this list."
+ "\n\t[-idleiterations <idleiterations>]"

2
hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/HDFSCommands.md
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@ -267,6 +267,7 @@ Usage:
[-policy <policy>]
[-exclude [-f <hosts-file> | <comma-separated list of hosts>]]
[-include [-f <hosts-file> | <comma-separated list of hosts>]]
[-source [-f <hosts-file> | <comma-separated list of hosts>]]
[-blockpools <comma-separated list of blockpool ids>]
[-idleiterations <idleiterations>]
@ -276,6 +277,7 @@ Usage:
| `-threshold` \<threshold\> | Percentage of disk capacity. This overwrites the default threshold. |
| `-exclude -f` \<hosts-file\> \| \<comma-separated list of hosts\> | Excludes the specified datanodes from being balanced by the balancer. |
| `-include -f` \<hosts-file\> \| \<comma-separated list of hosts\> | Includes only the specified datanodes to be balanced by the balancer. |
| `-source -f` \<hosts-file\> \| \<comma-separated list of hosts\> | Pick only the specified datanodes as source nodes. |
| `-blockpools` \<comma-separated list of blockpool ids\> | The balancer will only run on blockpools included in this list. |
| `-idleiterations` \<iterations\> | Maximum number of idle iterations before exit. This overwrites the default idleiterations(5). |