HDFS-7772. Document hdfs balancer -exclude/-include option in HDFSCommands.html. Contributed by Xiaoyu Yao.
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@ -354,6 +354,9 @@ Release 2.7.0 - UNRELEASED
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HDFS-7780. Update use of Iterator to Iterable in DataXceiverServer and
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SnapshotDiffInfo. (Ray Chiang via aajisaka)
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HDFS-7772. Document hdfs balancer -exclude/-include option in
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HDFSCommands.html (Xiaoyu Yao via cnauroth)
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OPTIMIZATIONS
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HDFS-7454. Reduce memory footprint for AclEntries in NameNode.
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@ -171,15 +171,14 @@ public class Balancer {
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private static final long GB = 1L << 30; //1GB
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private static final long MAX_SIZE_TO_MOVE = 10*GB;
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private static final String USAGE = "Usage: java "
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+ Balancer.class.getSimpleName()
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private static final String USAGE = "Usage: hdfs balancer"
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+ "\n\t[-policy <policy>]\tthe balancing policy: "
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+ BalancingPolicy.Node.INSTANCE.getName() + " or "
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+ BalancingPolicy.Pool.INSTANCE.getName()
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+ "\n\t[-threshold <threshold>]\tPercentage of disk capacity"
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+ "\n\t[-exclude [-f <hosts-file> | comma-sperated list of hosts]]"
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+ "\n\t[-exclude [-f <hosts-file> | <comma-separated list of hosts>]]"
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+ "\tExcludes the specified datanodes."
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+ "\n\t[-include [-f <hosts-file> | comma-sperated list of hosts]]"
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+ "\n\t[-include [-f <hosts-file> | <comma-separated list of hosts>]]"
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+ "\tIncludes only the specified datanodes."
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+ "\n\t[-idleiterations <idleiterations>]"
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+ "\tNumber of consecutive idle iterations (-1 for Infinite) before exit.";
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@ -134,7 +134,14 @@ HDFS Commands Guide
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to stop the rebalancing process. See
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{{{./HdfsUserGuide.html#Balancer}Balancer}} for more details.
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Usage: <<<hdfs balancer [-threshold <threshold>] [-policy <policy>] [-idleiterations <idleiterations>]>>>
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+------------------------------------------+
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Usage: hdfs balancer
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[-threshold <threshold>]
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[-policy <policy>]
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[-exclude [-f <hosts-file> | <comma-separated list of hosts>]]
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[-include [-f <hosts-file> | <comma-separated list of hosts>]]
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[-idleiterations <idleiterations>]
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+------------------------------------------+
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*------------------------+----------------------------------------------------+
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|| COMMAND_OPTION | Description
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@ -147,6 +154,12 @@ HDFS Commands Guide
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| | <<<blockpool>>>: Cluster is balanced if each block
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| | pool in each datanode is balanced.
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*------------------------+----------------------------------------------------+
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| -exclude -f \<hosts-file\> \| | Excludes the specified datanodes from
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| \<comma-separated list of hosts\> | being balanced by the balancer.
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*------------------------+----------------------------------------------------+
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| -include -f \<hosts-file\> \| | Includes only the specified datanode
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| \<comma-separated list of hosts\> | to be balanced by the balancer.
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*------------------------+----------------------------------------------------+
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| -idleiterations <iterations> | Maximum number of idle iterations before exit.
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| | This overwrites the default idleiterations(5).
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*------------------------+----------------------------------------------------+
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