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https://issues.apache.org/jira/browse/HDFS-10461?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Wang updated HDFS-10461:
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Parent Issue: HDFS-8425 (was: HDFS-8031)
> Erasure Coding: Optimize block checksum recalculation logic on the fly by
> reconstructing multiple missed blocks at a time
> -------------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-10461
> URL: https://issues.apache.org/jira/browse/HDFS-10461
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Rakesh R
> Assignee: Rakesh R
>
> This is HDFS-9833 follow-on task. HDFS-9833 is recomputing only one block
> checksum a time. The reconstruction logic can be further optimized by
> reconstructing multiple blocks at a time.
> There are several case to be considered like,
> case-1) Live Block indices : {{0, 4, 5, 6, 7, 8}} - consecutive missing data
> blocks 1, 2, 3
> case-2) Live Block indices : {{0, 2, 4, 6, 7, 8}} - jumbled missing data
> blocks 1, 3, 5
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