Yonghyun Hwang has posted comments on this change.

Change subject: IMPALA-3552: make incremental stats max serialized size 
configurable
......................................................................


Patch Set 1:

(4 comments)

http://gerrit.cloudera.org:8080/#/c/4867/1/be/src/catalog/catalog.cc
File be/src/catalog/catalog.cc:

PS1, Line 78: catalog_class_, catalog_ctor_,
            :       load_in_background, num_metadata_loading_threads, 
sentry_config,
            :       FlagToTLogLevel(FLAGS_v), 
FlagToTLogLevel(FLAGS_non_impala_java_vlog),
            :       auth_to_local, principal
> Since most of the code is shared between Catalog and Frontend, I think its 
Passing a TBackendConfig to Catalog::Catalog is a good idea. However, two 
questions.

1) are there any cases where two catalogs get instantiated?
2) do we want to change config even after catalog gets instantiated?


http://gerrit.cloudera.org:8080/#/c/4867/1/common/thrift/Types.thrift
File common/thrift/Types.thrift:

PS1, Line 233: TBackendConfig
> I think it was named this way to mean the "configs passed to the Backend". 
I also think this would not be the best place. please recommend better one. 
unless, let's keep this here for now.

For the name, I think 'TBackendConfig' is good for now, because we use BE/FE 
and BE takes a config options.


http://gerrit.cloudera.org:8080/#/c/4867/1/fe/src/main/java/org/apache/impala/service/JniCatalog.java
File fe/src/main/java/org/apache/impala/service/JniCatalog.java:

PS1, Line 83: boolean loadInBackground, int numMetadataLoadingThreads,
            :       String sentryServiceConfig, int impalaLogLevel, int 
otherLogLevel,
            :       boolean allowAuthToLocal, String kerberosPrincipal
> How about moving all these into TBackendConfig?
Agreed. However, Let's do that in a separate commit.


http://gerrit.cloudera.org:8080/#/c/4867/1/fe/src/main/java/org/apache/impala/service/JniFrontend.java
File fe/src/main/java/org/apache/impala/service/JniFrontend.java:

PS1, Line 120: boolean lazy, String serverName, String authorizationPolicyFile,
             :       String sentryConfigFile, String authPolicyProviderClass, 
int impalaLogLevel,
             :       int otherLogLevel, boolean allowAuthToLocal, String 
defaultKuduMasterHosts
> Same, how about we make TBackendConfig more generic and refactor all the co
Sure. Let's do that in a separate commit.


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Gerrit-MessageType: comment
Gerrit-Change-Id: I33684725a61eabc67237503e61178305d37d3cb5
Gerrit-PatchSet: 1
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Yonghyun Hwang <[email protected]>
Gerrit-Reviewer: Alex Behm <[email protected]>
Gerrit-Reviewer: Bharath Vissapragada <[email protected]>
Gerrit-Reviewer: Dimitris Tsirogiannis <[email protected]>
Gerrit-Reviewer: Huaisi Xu <[email protected]>
Gerrit-Reviewer: Yonghyun Hwang
Gerrit-Reviewer: Yonghyun Hwang <[email protected]>
Gerrit-HasComments: Yes

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