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https://issues.apache.org/jira/browse/HDFS-14994?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lisheng Sun updated HDFS-14994:
-------------------------------
Attachment: HDFS-14994.003.patch
> Optimize LowRedundancyBlocks#chooseLowRedundancyBlocks()
> --------------------------------------------------------
>
> Key: HDFS-14994
> URL: https://issues.apache.org/jira/browse/HDFS-14994
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Lisheng Sun
> Assignee: Lisheng Sun
> Priority: Major
> Attachments: HDFS-14994.001.patch, HDFS-14994.002.patch,
> HDFS-14994.003.patch
>
>
> 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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