[7.15] Quicker shared cache file preallocation (#79447)#79483
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elasticsearchmachine merged 1 commit intoelastic:7.15from Oct 19, 2021
Merged
[7.15] Quicker shared cache file preallocation (#79447)#79483elasticsearchmachine merged 1 commit intoelastic:7.15from
elasticsearchmachine merged 1 commit intoelastic:7.15from
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Reworks preallocation of the shared_cache file, which was very slow on Windows. Instead of manually filling the file with 0's, this new approach uses the RandomAccessFile.setLength() method, which can quickly allocate a file of the given size (tested that this took only seconds to preallocate TB-size file on Windows).
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Backports the following commits to 7.15: