Aman Sinha has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/17505 )

Change subject: IMPALA-7501: Slim down partition meta in LocalCatalog mode
......................................................................


Patch Set 3:

(7 comments)

Thanks Quanlong for this enhancement. Sending some initial comments based on a 
first pass.

http://gerrit.cloudera.org:8080/#/c/17505/3//COMMIT_MSG
Commit Message:

http://gerrit.cloudera.org:8080/#/c/17505/3//COMMIT_MSG@7
PS3, Line 7: meta
nit: did you mean metadata ? (meta has other meanings).


http://gerrit.cloudera.org:8080/#/c/17505/3//COMMIT_MSG@11
PS3, Line 11: used,
nit: use and (remove the comma)


http://gerrit.cloudera.org:8080/#/c/17505/3//COMMIT_MSG@11
PS3, Line 11: , mo
change to '..suboptimal.  Most of them..'


http://gerrit.cloudera.org:8080/#/c/17505/3//COMMIT_MSG@27
PS3, Line 27: meta
nit: metadata


http://gerrit.cloudera.org:8080/#/c/17505/3/common/thrift/CatalogObjects.thrift
File common/thrift/CatalogObjects.thrift:

http://gerrit.cloudera.org:8080/#/c/17505/3/common/thrift/CatalogObjects.thrift@325
PS3, Line 325:   // REMOVED: 1: optional byte lineDelim
Any reason why these commented fields cannot be removed ?


http://gerrit.cloudera.org:8080/#/c/17505/3/common/thrift/CatalogObjects.thrift@332
PS3, Line 332:   27: optional THdfsStorageDescriptor hdfs_storage_descriptor
Since this is number 27, could you move it down to line 396 ? The un-ordered 
numbering makes it confusing to read.


http://gerrit.cloudera.org:8080/#/c/17505/3/common/thrift/CatalogService.thrift
File common/thrift/CatalogService.thrift:

http://gerrit.cloudera.org:8080/#/c/17505/3/common/thrift/CatalogService.thrift@401
PS3, Line 401:   11: optional i64 write_id
Does the write_id need to be sent for each partition ? This is the last commit 
id for the table, so can it be abstracted out and sent outside the partition 
structure ? It will save 8 bytes per partition but I understand if doing that 
is not straightforward.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I307e7a8193b54a7b3ab93d9ebd194766bbdbd977
Gerrit-Change-Number: 17505
Gerrit-PatchSet: 3
Gerrit-Owner: Quanlong Huang <[email protected]>
Gerrit-Reviewer: Aman Sinha <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Quanlong Huang <[email protected]>
Gerrit-Reviewer: Vihang Karajgaonkar <[email protected]>
Gerrit-Comment-Date: Fri, 28 May 2021 03:47:41 +0000
Gerrit-HasComments: Yes

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