RuinanGu commented on code in PR #4252:
URL: https://github.com/apache/hadoop/pull/4252#discussion_r863162303
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/erasurecode/StripedReconstructionInfo.java:
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@@ -41,26 +41,28 @@ public class StripedReconstructionInfo {
private final DatanodeInfo[] targets;
private final StorageType[] targetStorageTypes;
private final String[] targetStorageIds;
+ private final byte[] excludeReconstructedIndices;
public StripedReconstructionInfo(ExtendedBlock blockGroup,
ErasureCodingPolicy ecPolicy, byte[] liveIndices, DatanodeInfo[] sources,
byte[] targetIndices) {
this(blockGroup, ecPolicy, liveIndices, sources, targetIndices, null,
- null, null);
+ null, null, new byte[0]);
}
StripedReconstructionInfo(ExtendedBlock blockGroup,
ErasureCodingPolicy ecPolicy, byte[] liveIndices, DatanodeInfo[] sources,
DatanodeInfo[] targets, StorageType[] targetStorageTypes,
- String[] targetStorageIds) {
+ String[] targetStorageIds, byte[] excludeReconstructedIndices) {
Review Comment:
When the DN receive the command of EC reconstruction, we can get
BlockECReconstructionCommand->
BlockECReconstructionInfo->StripedReconstructionInfo->StripedBlockReconstructor->StripedWriter,
ErasureCodingWorker.processErasureCodingTasks() calls this constructor
function.
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