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Posted to issues-all@impala.apache.org by "Kurt Deschler (Jira)" <ji...@apache.org> on 2023/06/01 10:58:00 UTC
[jira] [Updated] (IMPALA-12176) Improve client fetch metrics
[ https://issues.apache.org/jira/browse/IMPALA-12176?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Kurt Deschler updated IMPALA-12176:
-----------------------------------
Description:
These changes address limitations with the current metrics:
* ClientFetchWaitTimer includes both Thrift serialization/write and client time.
* RowMaterializationTimer includes both coordinator fetch time and time to convert rows to the client protocol.
Proposed changes:
* Add CreateResultSetTime metric to PLAN_ROOT_SINK node in the query profile. This will isolate the cost to convert fetched rows to the client protocol.
* Add read/write times for RPCs in /rpcz webui. These will be hidden by default with a checkbox to enable display.
* Add sum to RPC histogram metrics
* Show client RPC read/write/count stats in the query profile
was:
These changes address limitations with the current metrics:
* ClientFetchWaitTimer includes both Thrift serialization/write and client time.
* RowMaterializationTimer includes both coordinator fetch time and time to convert rows to the client protocol.
Proposed changes:
* Add CreateResultSetTime metric to PLAN_ROOT_SINK node in the query profile. This will isolate the cost to convert fetched rows to the client protocol.
* Add read/write times for RPCs in /rpcz webui. These will be hidden by default with a checkbox to enable display.
* Show client RPC read/write/count stats in the query profile
> Improve client fetch metrics
> ----------------------------
>
> Key: IMPALA-12176
> URL: https://issues.apache.org/jira/browse/IMPALA-12176
> Project: IMPALA
> Issue Type: Improvement
> Reporter: Kurt Deschler
> Assignee: Kurt Deschler
> Priority: Major
>
> These changes address limitations with the current metrics:
> * ClientFetchWaitTimer includes both Thrift serialization/write and client time.
> * RowMaterializationTimer includes both coordinator fetch time and time to convert rows to the client protocol.
> Proposed changes:
> * Add CreateResultSetTime metric to PLAN_ROOT_SINK node in the query profile. This will isolate the cost to convert fetched rows to the client protocol.
> * Add read/write times for RPCs in /rpcz webui. These will be hidden by default with a checkbox to enable display.
> * Add sum to RPC histogram metrics
> * Show client RPC read/write/count stats in the query profile
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