maobaolong created HDFS-13527:
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Summary: craeteLocatedBlock IsCorrupt logic is fault when all
block are corrupt.
Key: HDFS-13527
URL: https://issues.apache.org/jira/browse/HDFS-13527
Project: Hadoop HDFS
Issue Type: Bug
Components: hdfs, namenode
Affects Versions: 3.2.0
Reporter: maobaolong
the step is:
1. put a small file into hdfs FILEPATH
2. remove block replicas in all datanode blockpool.
3. restart datanode
4. restart namenode( leave safemode)
5. hdfs fsck FILEPATH -files -blocks -locations
6. namenode think this block is not corrupt block.
the code logic is:
{code:java}
// get block locations
NumberReplicas numReplicas = countNodes(blk);
final int numCorruptNodes = numReplicas.corruptReplicas();
final int numCorruptReplicas = corruptReplicas.numCorruptReplicas(blk);
if (numCorruptNodes != numCorruptReplicas) {
LOG.warn("Inconsistent number of corrupt replicas for {}"
+ " blockMap has {} but corrupt replicas map has {}",
blk, numCorruptNodes, numCorruptReplicas);
}
final int numNodes = blocksMap.numNodes(blk);
final boolean isCorrupt;
if (blk.isStriped()) {
BlockInfoStriped sblk = (BlockInfoStriped) blk;
isCorrupt = numCorruptReplicas != 0 &&
numReplicas.liveReplicas() < sblk.getRealDataBlockNum();
} else {
isCorrupt = numCorruptReplicas != 0 && numCorruptReplicas == numNodes;
}
{code}
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