[jira] [Updated] (SPARK-26363) Avoid duplicated KV store lookups for task table

["Gengliang Wang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-26363?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gengliang Wang updated SPARK-26363:
-----------------------------------
    Summary:  Avoid duplicated KV store lookups for task table  (was: Remove redundant field `executorLogs` in TaskData)

>  Avoid duplicated KV store lookups for task table
> -------------------------------------------------
>
>                 Key: SPARK-26363
>                 URL: https://issues.apache.org/jira/browse/SPARK-26363
>             Project: Spark
>          Issue Type: Improvement
>          Components: Web UI
>    Affects Versions: 3.0.0
>            Reporter: Gengliang Wang
>            Priority: Major
>
> In https://github.com/apache/spark/pull/21688, a new filed `executorLogs` is added to `TaskData` in `api.scala`:
> 1. The field should not belong to `TaskData` (from the meaning of wording).
> 2. This is redundant with ExecutorSummary. 
> 3. For each row in the task table, the executor log value is lookup in KV store every time, which can be avoided for better performance in large scale.
> This PR propose to reuse the executor details of request "/allexecutors" , so that we can have a cleaner api data structure, and redundant KV store queries are avoided. 



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