HDFS-13962. Add null check for add-replica pool to avoid lock acquiring. Contributed by Surendra Singh Lilhore.
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@ -183,8 +183,10 @@ class BlockPoolSlice {
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.setConf(conf)
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.setInitialUsed(loadDfsUsed())
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.build();
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// initialize add replica fork join pool
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initializeAddReplicaPool(conf);
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if (addReplicaThreadPool == null) {
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// initialize add replica fork join pool
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initializeAddReplicaPool(conf);
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}
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// Make the dfs usage to be saved during shutdown.
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shutdownHook = new Runnable() {
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@Override
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@ -154,7 +154,7 @@ class ReplicaMap {
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if (oldReplicaInfo != null) {
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return oldReplicaInfo;
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} else {
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set.add(replicaInfo);
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set.addOrReplace(replicaInfo);
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}
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return replicaInfo;
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}
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