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HDFS-16223. AvailableSpaceRackFaultTolerantBlockPlacementPolicy should use chooseRandomWithStorageTypeTwoTrial() for better performance. (#3424). Contributed by Ayush Saxena.

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Ayush Saxena 2021-09-13 15:24:38 +05:30 committed by GitHub
parent 356ebbbe80
commit 17c58ac959
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1 changed files with 2 additions and 2 deletions
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/AvailableSpaceRackFaultTolerantBlockPlacementPolicy.java
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@ -80,9 +80,9 @@ protected DatanodeDescriptor chooseDataNode(final String scope,
Preconditions.checkArgument(clusterMap instanceof DFSNetworkTopology);
DFSNetworkTopology dfsClusterMap = (DFSNetworkTopology) clusterMap;
DatanodeDescriptor a = (DatanodeDescriptor) dfsClusterMap
.chooseRandomWithStorageType(scope, excludedNode, type);
.chooseRandomWithStorageTypeTwoTrial(scope, excludedNode, type);
DatanodeDescriptor b = (DatanodeDescriptor) dfsClusterMap
.chooseRandomWithStorageType(scope, excludedNode, type);
.chooseRandomWithStorageTypeTwoTrial(scope, excludedNode, type);
return select(a, b);
}