HDFS-7772. Document hdfs balancer -exclude/-include option in HDFSCommands.html. Contributed by Xiaoyu Yao.

This commit is contained in:
cnauroth 2015-02-18 11:47:45 -08:00
parent 8f06eaa251
commit b1b1e05e18
3 changed files with 20 additions and 5 deletions

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@ -354,6 +354,9 @@ Release 2.7.0 - UNRELEASED
HDFS-7780. Update use of Iterator to Iterable in DataXceiverServer and
SnapshotDiffInfo. (Ray Chiang via aajisaka)
HDFS-7772. Document hdfs balancer -exclude/-include option in
HDFSCommands.html (Xiaoyu Yao via cnauroth)
OPTIMIZATIONS
HDFS-7454. Reduce memory footprint for AclEntries in NameNode.

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@ -171,15 +171,14 @@ public class Balancer {
private static final long GB = 1L << 30; //1GB
private static final long MAX_SIZE_TO_MOVE = 10*GB;
private static final String USAGE = "Usage: java "
+ Balancer.class.getSimpleName()
private static final String USAGE = "Usage: hdfs balancer"
+ "\n\t[-policy <policy>]\tthe balancing policy: "
+ BalancingPolicy.Node.INSTANCE.getName() + " or "
+ BalancingPolicy.Pool.INSTANCE.getName()
+ "\n\t[-threshold <threshold>]\tPercentage of disk capacity"
+ "\n\t[-exclude [-f <hosts-file> | comma-sperated list of hosts]]"
+ "\n\t[-exclude [-f <hosts-file> | <comma-separated list of hosts>]]"
+ "\tExcludes the specified datanodes."
+ "\n\t[-include [-f <hosts-file> | comma-sperated list of hosts]]"
+ "\n\t[-include [-f <hosts-file> | <comma-separated list of hosts>]]"
+ "\tIncludes only the specified datanodes."
+ "\n\t[-idleiterations <idleiterations>]"
+ "\tNumber of consecutive idle iterations (-1 for Infinite) before exit.";

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@ -134,7 +134,14 @@ HDFS Commands Guide
to stop the rebalancing process. See
{{{./HdfsUserGuide.html#Balancer}Balancer}} for more details.
Usage: <<<hdfs balancer [-threshold <threshold>] [-policy <policy>] [-idleiterations <idleiterations>]>>>
+------------------------------------------+
Usage: hdfs balancer
[-threshold <threshold>]
[-policy <policy>]
[-exclude [-f <hosts-file> | <comma-separated list of hosts>]]
[-include [-f <hosts-file> | <comma-separated list of hosts>]]
[-idleiterations <idleiterations>]
+------------------------------------------+
*------------------------+----------------------------------------------------+
|| COMMAND_OPTION | Description
@ -147,6 +154,12 @@ HDFS Commands Guide
| | <<<blockpool>>>: Cluster is balanced if each block
| | pool in each datanode is balanced.
*------------------------+----------------------------------------------------+
| -exclude -f \<hosts-file\> \| | Excludes the specified datanodes from
| \<comma-separated list of hosts\> | being balanced by the balancer.
*------------------------+----------------------------------------------------+
| -include -f \<hosts-file\> \| | Includes only the specified datanode
| \<comma-separated list of hosts\> | to be balanced by the balancer.
*------------------------+----------------------------------------------------+
| -idleiterations <iterations> | Maximum number of idle iterations before exit.
| | This overwrites the default idleiterations(5).
*------------------------+----------------------------------------------------+