Roman Khavronenko 548bf31dd2 app/vmselect: make vmselect resilient to absence of cache folder (#5987) ... vmselect uses a cache folder in file system for two purposes: 1. Storing rollup cache results on shutdown; 2. Storing temporary search results from vmstorage during query executions. It could happen that cache folder is deleted accidentally by user, or by OS during cleanup routines. This would cause vmselect to: 1. panic on /metrics call, because `MustGetFreeSpace` will fail; 2. return query error user, as it won't be able to store temporary search results. The changes in this commit are the following: 1. Make `MustGetFreeSpace` to try re-creating the cache folder if it is missing; 2. Make vmselect to try re-creating the cache folder if it can't persist tmp search results. https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5985 Signed-off-by: hagen1778 <roman@victoriametrics.com> Co-authored-by: Nikolay <nik@victoriametrics.com> (cherry picked from commit cb23685681)		2024-03-26 15:27:32 +01:00
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netstorage_test.go	app/vmselect/netstorage: eliminate memory allocation for sortBlocksHeap arg when calling mergeSortBlocks()	2023-01-09 21:29:01 -08:00
netstorage_timing_test.go	app/vmselect/netstorage: eliminate memory allocation for sortBlocksHeap arg when calling mergeSortBlocks()	2023-01-09 21:29:01 -08:00
netstorage.go	app/vmselect/netstorage: usae unsafe.SliceData instead of deprecated reflect.SliceHeader	2024-02-29 17:38:14 +02:00
tmp_blocks_file_test.go	app/{vminsert,vmselect}: limit the access to storageNodes to getStorageNodesBucket and setStorageNodesBucket functions	2022-10-28 11:41:55 +03:00
tmp_blocks_file.go	app/vmselect: make vmselect resilient to absence of cache folder (#5987)	2024-03-26 15:27:32 +01:00