Rakesh R created HDFS-10461:
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Summary: 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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