LiuGuH commented on code in PR #6926:
URL: https://github.com/apache/hadoop/pull/6926#discussion_r1731221302
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java:
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@@ -3003,46 +3010,58 @@ private class DataTransfer implements Runnable {
final DatanodeInfo[] targets;
final StorageType[] targetStorageTypes;
final private String[] targetStorageIds;
- final ExtendedBlock b;
+ final private ExtendedBlock source;
+ private ExtendedBlock target;
final BlockConstructionStage stage;
final private DatanodeRegistration bpReg;
final String clientname;
final CachingStrategy cachingStrategy;
- /** Throttle to block replication when data transfers or writes. */
+ /**
+ * Throttle to block replication when data transfers or writes.
+ */
private DataTransferThrottler throttler;
+ private boolean copyBlockCrossNamespace;
Review Comment:
This is used for distinguishing that a DataTransfer task is form NN command
or from fastcopy task.
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