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HBASE-27313: Persist list of Hfiles names for which prefetch is done #4771
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wchevreuil
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Sep 8, 2022
vinayakphegde
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Apr 4, 2024
…r which prefetch is done (apache#4771) Signed-off-by: Wellington Chevreuil <[email protected]> (cherry picked from commit a1fc483) Change-Id: I2d9fab1043625919321d2120571dc43327a42118
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Jira link: https://issues.apache.org/jira/browse/HBASE-27313
Note:
A patch has already been merged into master, this PR is for branch-2.
Summary:
Persist list of Hfiles names for which prefetch is completed when persist for in-memory bucket cache mapping state is enabled.
We need to persist the Set, which contains a list of all the HFiles for which the prefetch has completed along with the In-memory state of the bucket cache so that when we restart and if any prefetch is scheduled again for the same HFile and we already have the in-memory state retrieved, we can skip the prefetch for it.