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lib/logstorage/consts.go: document that it isn't recommended setting maxColumnsPerBlock constant to too big values

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This should help avoiding cases like this one - https://github.com/VictoriaMetrics/VictoriaMetrics/issues/6425#issuecomment-2337446083
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Aliaksandr Valialkin 2024-09-24 18:51:23 +02:00
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lib/logstorage/consts.go
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@ -14,6 +14,10 @@ const maxUncompressedBlockSize = 2 * 1024 * 1024
const maxRowsPerBlock = 8 * 1024 * 1024
// maxColumnsPerBlock is the maximum number of columns per block.
//
// It isn't recommended setting this value to too big value, because this may result
// in excess memory usage during data ingestion and significant slowdown during query execution,
// since every column header is unpacked in every matching block during query execution.
const maxColumnsPerBlock = 1_000
// MaxFieldNameSize is the maximum size in bytes for field name.