Also mmap cfs files for hybridfs (#38940)#38948
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danielmitterdorfer merged 1 commit intoelastic:7.0from Feb 15, 2019
Merged
Also mmap cfs files for hybridfs (#38940)#38948danielmitterdorfer merged 1 commit intoelastic:7.0from
danielmitterdorfer merged 1 commit intoelastic:7.0from
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With this commit we add the `.cfs` file extension to the list of file types that are memory-mapped by hybridfs. `.cfs` files combine all files of a Lucene segment into a single file in order to save file handles. As this strategy is only used for "small" segments (less than 10% of the shard size), it is benefical to memory-map them instead of accessing them via NIO. Relates elastic#36668
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With this commit we add the
.cfsfile extension to the list of filetypes that are memory-mapped by hybridfs.
.cfsfiles combine all filesof a Lucene segment into a single file in order to save file handles. As
this strategy is only used for "small" segments (less than 10% of the
shard size), it is benefical to memory-map them instead of accessing
them via NIO.
Relates #36668