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Posted to issues@flink.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2021/06/15 07:37:00 UTC
[jira] [Updated] (FLINK-22994) Improve the performance of invoking
nesting udf
[ https://issues.apache.org/jira/browse/FLINK-22994?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ASF GitHub Bot updated FLINK-22994:
-----------------------------------
Labels: pull-request-available (was: )
> Improve the performance of invoking nesting udf
> -----------------------------------------------
>
> Key: FLINK-22994
> URL: https://issues.apache.org/jira/browse/FLINK-22994
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / Planner
> Affects Versions: 1.12.4
> Environment: h5.
> Reporter: lynn1.zhang
> Priority: Major
> Labels: pull-request-available
> Attachments: image-2021-06-15-15-18-12-619.png, image-2021-06-15-15-19-01-103.png, image-2021-06-15-15-27-26-739.png, image-2021-06-15-15-28-28-137.png, image-2021-06-15-15-29-09-773.png, image-2021-06-15-15-30-14-775.png
>
>
> h1. BackGround
> Flink maintain the udf result as binary, like BinaryStringData. When invoking nesting udf like select useless(int_ip_2_string(ip)), the result of int_ip_2_string(ip) will be serialization and deserialization.
> Below is the Generated Code
> !image-2021-06-15-15-18-12-619.png! this issue want to improve it as below
> !image-2021-06-15-15-19-01-103.png!
> h1. Performance Compare
> Condition: Source = Kafka，Schema = PB with snappy；Flink Slot = 1、taskmanager.memory.process.size=4g; Linux Core = Intel(R) Xeon(R) Gold 5218 CPU @ 2.30GHz
> UDF Introduction:
> * ipip: input: int ip，output: map ip_info，map size = 14。
> * ip_2_country: input map ip_info，output: string country。
> * ip_2_region: input map ip_info，output: string region。
> * ip_2_isp_domain: input map ip_info，output: string isp。
> * ip_2_timezone: input map ip_info，output: string timezone。
> h5. The throughput without udf invoke: 764.50 w/s
> !image-2021-06-15-15-27-26-739.png!
> h5. The throughput with udf invoke: 183.24 k/s
> !image-2021-06-15-15-28-28-137.png!
> h5. The throughput with udf nesting invoke: 41.42 k/s
> !image-2021-06-15-15-29-09-773.png!
> h5. The throughput with udf nesting invoke after the issue: 174.41 k/s
> !image-2021-06-15-15-30-14-775.png!
>
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