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d82a434d10
`mmapfs` is really good for random access but can have sideeffects if memory maps are large depending on the operating system etc. A hybrid solution where only selected files are actually memory mapped but others mostly consumed sequentially brings the best of both worlds and minimizes the memory map impact. This commit mmaps only the `dvd` and `tim` file for fast random access on docvalues and term dictionaries. Closes #6636
The Elasticsearch docs are in AsciiDoc format and can be built using the Elasticsearch documentation build process