Quanlong Huang has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/16058 )

Change subject: IMPALA-7538: Support HDFS caching with LocalCatalog
......................................................................


Patch Set 2:

(2 comments)

Thanks for the review!

Reexamined the code paths for global invalidation and catalogd restarts. Added 
more comments.

http://gerrit.cloudera.org:8080/#/c/16058/1/fe/src/main/java/org/apache/impala/catalog/local/DirectMetaProvider.java
File fe/src/main/java/org/apache/impala/catalog/local/DirectMetaProvider.java:

http://gerrit.cloudera.org:8080/#/c/16058/1/fe/src/main/java/org/apache/impala/catalog/local/DirectMetaProvider.java@92
PS1, Line 92: Pools() {
> I know this is not used currently, but such messages have a way to sneek in
Done


http://gerrit.cloudera.org:8080/#/c/16058/1/fe/src/main/java/org/apache/impala/catalog/local/LocalFsTable.java
File fe/src/main/java/org/apache/impala/catalog/local/LocalFsTable.java:

http://gerrit.cloudera.org:8080/#/c/16058/1/fe/src/main/java/org/apache/impala/catalog/local/LocalFsTable.java@126
PS1, Line 126: es not necessarily mean
             :    * the data is cached
> just for my understanding what does this statement mean? When would a parti
These comments are copied from catalog-v1. I think one case is users can 
uncache the directories or sub-directories using hdfs commands.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I661f7b76a9575f6f5b3fa2c6feebda1a5d7c3712
Gerrit-Change-Number: 16058
Gerrit-PatchSet: 2
Gerrit-Owner: Quanlong Huang <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Quanlong Huang <[email protected]>
Gerrit-Reviewer: Tim Armstrong <[email protected]>
Gerrit-Reviewer: Vihang Karajgaonkar <[email protected]>
Gerrit-Comment-Date: Tue, 16 Jun 2020 08:54:44 +0000
Gerrit-HasComments: Yes

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