Use simdjson for json_parse #7658
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Summary: In `json_parse` when the input is invalid, we throw exception and it's slow (both the creation and throwing). To avoid creating or throwing the exception, we switch the implementation to `simdjson` and set a pre-canned exception when the input is invalid. This reduces the CPU time in some queries (with JSON validity check in filter) by more than 20 times (from 2.34 days to 2.68 hours). Differential Revision: D51469435
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This pull request was exported from Phabricator. Differential Revision: D51469435 |
Yuhta
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Summary: In `json_parse` when the input is invalid, we throw exception and it's slow (both the creation and throwing). To avoid creating or throwing the exception, we switch the implementation to `simdjson` and set a pre-canned exception when the input is invalid. This reduces the CPU time in some queries (with JSON validity check in filter) by more than 20 times (from 2.34 days to 2.68 hours). Differential Revision: D51469435
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PHILO-HE
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| @@ -114,6 +139,9 @@ class JsonParseFunction : public exec::VectorFunction { | |||
| .argumentType("varchar") | |||
| .build()}; | |||
| } | |||
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| private: | |||
| mutable simdjson::dom::parser parser_; | |||
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Yes I tried ondemand parser first and find it is not able to invalidate some malformed JSON.
Summary: In `json_parse` when the input is invalid, we throw exception and it's slow (both the creation and throwing). To avoid creating or throwing the exception, we switch the implementation to `simdjson` and set a pre-canned exception when the input is invalid. This reduces the CPU time in some queries (with JSON validity check in filter) by more than 20 times (from 2.34 days to 2.68 hours). Reviewed By: mbasmanova Differential Revision: D51469435
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Yuhta
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Summary: In `json_parse` when the input is invalid, we throw exception and it's slow (both the creation and throwing). To avoid creating or throwing the exception, we switch the implementation to `simdjson` and set a pre-canned exception when the input is invalid. This reduces the CPU time in some queries (with JSON validity check in filter) by more than 20 times (from 2.34 days to 2.68 hours). Reviewed By: mbasmanova Differential Revision: D51469435
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This pull request was exported from Phabricator. Differential Revision: D51469435 |
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This pull request was exported from Phabricator. Differential Revision: D51469435 |
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This pull request has been merged in 0460044. |
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Conbench analyzed the 1 benchmark run on commit There were no benchmark performance regressions. 🎉 The full Conbench report has more details. |
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Summary: In
json_parsewhen the input is invalid, we throw exception and it's slow (both the creation and throwing). To avoid creating or throwing the exception, we switch the implementation tosimdjsonand set a pre-canned exception when the input is invalid. This reduces the CPU time in some queries (with JSON validity check in filter) by more than 20 times (from 2.34 days to 2.68 hours).Differential Revision: D51469435