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@ugtar ugtar commented Nov 3, 2021

fix #839

In clusters containing tags with high cardinality a query over multiple tags can easily overflow the maximum size of the callback chain resulting in a CallbackOverflowError when creating the callback chain for writing the resulting json output. This change writes the json in chunks to avoid the overflow error.

This PR supercedes #2150

@ugtar ugtar marked this pull request as ready for review November 4, 2021 00:38
@RuffSeason
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Any plans to merge this? I recently built from this branch and I fixed tons of issues we were experiencing with querying high cardinality metrics.

@johann8384 johann8384 merged commit db28637 into OpenTSDB:master Apr 11, 2023
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CallbackOverflowError with many tag values

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