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HDFS-9342. Erasure coding: client should update and commit block based on acknowledged size. Contributed by SammiChen.

This commit is contained in:
Andrew Wang 2017-05-07 14:45:26 -07:00
parent 8065129d87
commit a9a3d219fe
1 changed files with 28 additions and 0 deletions
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28
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSStripedOutputStream.java
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@ -772,9 +772,37 @@ public class DFSStripedOutputStream extends DFSOutputStream {
newStorageIDs[i] = "";
}
}
// should update the block group length based on the acked length
final long sentBytes = currentBlockGroup.getNumBytes();
final long ackedBytes = getNumAckedStripes() * cellSize * numDataBlocks;
Preconditions.checkState(ackedBytes <= sentBytes);
currentBlockGroup.setNumBytes(ackedBytes);
newBG.setNumBytes(ackedBytes);
dfsClient.namenode.updatePipeline(dfsClient.clientName, currentBlockGroup,
newBG, newNodes, newStorageIDs);
currentBlockGroup = newBG;
currentBlockGroup.setNumBytes(sentBytes);
}
/**
* Get the number of acked stripes. An acked stripe means at least data block
* number size cells of the stripe were acked.
*/
private long getNumAckedStripes() {
int minStripeNum = Integer.MAX_VALUE;
for (int i = 0; i < numAllBlocks; i++) {
final StripedDataStreamer streamer = getStripedDataStreamer(i);
if (streamer.isHealthy()) {
int curStripeNum = 0;
if (streamer.getBlock() != null) {
curStripeNum = (int) (streamer.getBlock().getNumBytes() / cellSize);
}
minStripeNum = Math.min(curStripeNum, minStripeNum);
}
}
assert minStripeNum != Integer.MAX_VALUE;
return minStripeNum;
}
private int stripeDataSize() {