HDFS-8923. Add -source flag to balancer usage message. Contributed by Chris Trezzo
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@ -2817,6 +2817,9 @@ Release 2.7.3 - UNRELEASED
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HDFS-4946. Allow preferLocalNode in BlockPlacementPolicyDefault to be
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configurable (James Kinley and Nathan Roberts via kihwal)
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HDFS-8923. Add -source flag to balancer usage message. (Chris Trezzo
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via szetszwo)
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OPTIMIZATIONS
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BUG FIXES
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@ -179,6 +179,8 @@ public class Balancer {
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+ "\tExcludes the specified datanodes."
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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[-source [-f <hosts-file> | <comma-separated list of hosts>]]"
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+ "\tPick only the specified datanodes as source nodes."
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+ "\n\t[-blockpools <comma-separated list of blockpool ids>]"
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+ "\tThe balancer will only run on blockpools included in this list."
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+ "\n\t[-idleiterations <idleiterations>]"
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@ -267,6 +267,7 @@ Usage:
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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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[-source [-f <hosts-file> | <comma-separated list of hosts>]]
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[-blockpools <comma-separated list of blockpool ids>]
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[-idleiterations <idleiterations>]
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@ -276,6 +277,7 @@ Usage:
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| `-threshold` \<threshold\> | Percentage of disk capacity. This overwrites the default threshold. |
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| `-exclude -f` \<hosts-file\> \| \<comma-separated list of hosts\> | Excludes the specified datanodes from being balanced by the balancer. |
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| `-include -f` \<hosts-file\> \| \<comma-separated list of hosts\> | Includes only the specified datanodes to be balanced by the balancer. |
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| `-source -f` \<hosts-file\> \| \<comma-separated list of hosts\> | Pick only the specified datanodes as source nodes. |
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| `-blockpools` \<comma-separated list of blockpool ids\> | The balancer will only run on blockpools included in this list. |
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| `-idleiterations` \<iterations\> | Maximum number of idle iterations before exit. This overwrites the default idleiterations(5). |
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