ramkrish86 commented on issue #909: HBASE-23355 Bypass the prefetch operation if HFiles are generated through flush or compaction URL: https://github.com/apache/hbase/pull/909#issuecomment-565897709 As I said in the other JIRA, already double cache was not happening at the code level - means an already cached block is never cached by the HFileReaderImpl#readBlock() call. But this patch by design will avoid the caching to happen during compaction and flushes.
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