Xiaolin Ha created HBASE-27647:
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Summary: Fix the cached block differ (which should not have
happened) issue with cacheDataOnWrite on
Key: HBASE-27647
URL: https://issues.apache.org/jira/browse/HBASE-27647
Project: HBase
Issue Type: Bug
Reporter: Xiaolin Ha
Assignee: Xiaolin Ha
When caching the block by reading from hfile, the block cached will contains a
header with the next block info.
But when caching the block by writing when cacheDataOnWrite is on, the block
cached without the header of the next block info.
Then comparing the old and new blocking in
BlockCacheUtil#validateBlockAddition, it will print error logs ,
{code:java}
hfile.BlockCacheUtil: Cached block contents differ, which should not have
happened. cacheKey:XXX {code}
This will harm the actual replacement of the cached lock, since we should
replace or not when the cached block contents differ by nextBlockOnDiskSize.
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