tsdb: zero out Labels and memSeries pointers in pool #13712
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So that the garbage-collector doesn't see this memory as still in use. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
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beorn7
approved these changes
Mar 6, 2024
Signed-off-by: Björn Rabenstein <github@rabenste.in>
Signed-off-by: Björn Rabenstein <github@rabenste.in>
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So that the garbage-collector doesn't see this memory as still in use.
To explain a little further, the block of memory in the pool will be seen as a zero-length slice when used, but it might have previously contained 10,000 series. Unless we zero out those pointers, or re-use that block for a new scrape of length 10,000, they will all continue to be seen as valid references by the garbage-collector.
This is more noticeable when using
-tags dedupelabels, but still relevant before.