Aliaksandr Valialkin
1c5163ae51
lib/mergeset: make sure that the first and the last items are in the original range after prepareBlock()
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Previously the checks were to strict by requiring to leave the same first and last items by prepareBlock()
Thanks to @ahfuzhang for the suggestion at https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5655
2024-01-23 12:58:32 +02:00
Aliaksandr Valialkin
980338861f
lib/mergeset: skip comparison for every item in the block during merge if the last item in the block is smaller than the first item in the next block
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Thanks to @ahfuzhang for the suggestion at https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5651
2024-01-23 03:15:52 +02:00
Aliaksandr Valialkin
a3f5822dc2
lib/mergeset: do not update blockStreamReader.bh.firstItem during the merge
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Just read the current item directly from blockStreamReader.Block.Items
with the helper method - blockStreamReader.CurrItem()
2022-07-27 23:05:02 +03:00
Dmytro Kozlov
306ec10c39
lib/mergeset: fix linter error ( #2864 )
2022-07-13 12:31:35 +03:00
Aliaksandr Valialkin
17b5ac1608
lib/mergeset: optimize merge speed a bit
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Use heap.Fix instead of heap.Pop + heap.Push when merging blocks
2022-07-12 12:50:26 +03:00
Aliaksandr Valialkin
636c55b526
lib/mergeset: reduce memory usage for inmemoryBlock by using more compact items representation
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This also should reduce CPU time spent by GC, since inmemoryBlock.items don't have pointers now,
so GC doesn't need visiting them.
2021-02-21 22:06:47 +02:00
Aliaksandr Valialkin
8beb0da6ad
lib/{mergeset,storage}: compare errors with errors.Is()
2020-09-17 03:03:02 +03:00
Aliaksandr Valialkin
e7959094f6
lib/storage: remove prioritizing of merging small parts over merging big parts, since it doesn't work as expected
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The prioritizing could lead to big merge starvation, which could end up in too big number of parts that must be merged into big parts.
Multiple big merges may be initiated after the migration from v1.39.0 or v1.39.1. It is OK - these merges should be finished soon,
which should return CPU and disk IO usage to normal levels.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/648
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/618
2020-07-30 19:57:27 +03:00
Aliaksandr Valialkin
6f05c4d351
lib/storage: improve prioritizing of data ingestion over querying
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Prioritize also small merges over big merges.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/291
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/648
2020-07-23 13:23:36 +03:00
Aliaksandr Valialkin
d5dddb0953
all: use %w instead of %s for wrapping errors in fmt.Errorf
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This will simplify examining the returned errors such as httpserver.ErrorWithStatusCode .
See https://blog.golang.org/go1.13-errors for details.
2020-06-30 23:05:11 +03:00
Aliaksandr Valialkin
4e26ad869b
lib/{storage,mergeset}: verify PrepareBlock callback results
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Do not touch the first and the last item passed to PrepareBlock
in order to preserve sort order of mergeset blocks.
2019-09-23 20:43:13 +03:00
Aliaksandr Valialkin
0686ac52c3
lib/{storage,mergeset}: merge tag->metricID rows into tag->metricIDs rows for common tag values
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This should improve lookup performance if the same `label=value` pair exists
in big number of time series.
This should also reduce memory usage for mergeset data cache, since `tag->metricIDs` rows
occupy less space than the original `tag->metricID` rows.
2019-09-20 22:06:41 +03:00
Aliaksandr Valialkin
51a21c7d4b
lib/mergeset: fill partHeader.firstItem on first block flush
2019-09-19 17:48:09 +03:00
Aliaksandr Valialkin
af2ceaaa0b
lib/storage: mention source parts on merge error
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This should improve determining broken source part.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/76
2019-06-24 14:08:43 +03:00
Aliaksandr Valialkin
1836c415e6
all: open-sourcing single-node version
2019-05-23 00:18:06 +03:00
