[jira] [Created] (IMPALA-10613) Expose table and partition metadata over HMS API

2021-03-25 Thread Vihang Karajgaonkar (Jira)
Vihang Karajgaonkar created IMPALA-10613:


 Summary: Expose table and partition metadata over HMS API
 Key: IMPALA-10613
 URL: https://issues.apache.org/jira/browse/IMPALA-10613
 Project: IMPALA
  Issue Type: Sub-task
Reporter: Vihang Karajgaonkar
Assignee: Vihang Karajgaonkar


Catalogd caches the table and partition metadata. If an external FE needs to be 
supported to query using the Impala, it would need to get this metadata from 
catalogd to compile the query and generate the plan. While a subset of the 
metadata which is cached in catalogd, is sourced from Hive metastore, it also 
caches file metadata which is needed by the Impala backend to create the Impala 
plan. It would be good to expose the table and partition metadata cached in 
catalogd over HMS API so that any Hive metastore client (e.g spark, hive) can 
potentially use this metadata to create a plan. This JIRA tracks the work 
needed to expose this information over catalogd.



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[jira] [Created] (IMPALA-10613) Expose table and partition metadata over HMS API

2021-03-25 Thread Vihang Karajgaonkar (Jira)
Vihang Karajgaonkar created IMPALA-10613:


 Summary: Expose table and partition metadata over HMS API
 Key: IMPALA-10613
 URL: https://issues.apache.org/jira/browse/IMPALA-10613
 Project: IMPALA
  Issue Type: Sub-task
Reporter: Vihang Karajgaonkar
Assignee: Vihang Karajgaonkar


Catalogd caches the table and partition metadata. If an external FE needs to be 
supported to query using the Impala, it would need to get this metadata from 
catalogd to compile the query and generate the plan. While a subset of the 
metadata which is cached in catalogd, is sourced from Hive metastore, it also 
caches file metadata which is needed by the Impala backend to create the Impala 
plan. It would be good to expose the table and partition metadata cached in 
catalogd over HMS API so that any Hive metastore client (e.g spark, hive) can 
potentially use this metadata to create a plan. This JIRA tracks the work 
needed to expose this information over catalogd.



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