Lisheng Sun created HDFS-14994:
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Summary: Optimize LowRedundancyBlocks#chooseLowRedundancyBlocks()
Key: HDFS-14994
URL: https://issues.apache.org/jira/browse/HDFS-14994
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Lisheng Sun
when priority=QUEUE_WITH_CORRUPT_BLOCKS, it mean no block in needreplication
need replica.
in current code if use continue, there is one more invalid judgment (priority
==QUEUE_WITH_CORRUPT_BLOCKS).
i think it should use break instread of continue.
{code:java}
*/
synchronized List<List<BlockInfo>> chooseLowRedundancyBlocks(
int blocksToProcess) {
final List<List<BlockInfo>> blocksToReconstruct = new ArrayList<>(LEVEL);
int count = 0;
int priority = 0;
for (; count < blocksToProcess && priority < LEVEL; priority++) {
if (priority == QUEUE_WITH_CORRUPT_BLOCKS) {
// do not choose corrupted blocks.
continue;
}
...
}
{code}
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