[CELEBORN-1258] Add UserIdentifier into the master application meta

[turboFei]

What changes were proposed in this pull request?

Record the userIdentifier in master application meta.
Also including app totalWritten, fileCount info.

Why are the changes needed?

To close CELEBORN-1258

Does this PR introduce any user-facing change?

Yes.
The result format of master RESTful api /applications changed.

How was this patch tested?

UT.

[turboFei]

should we use a different field number with deprecated appHeartbeatTime?

  map<string, int64> appHeartbeatTime = 6;

[turboFei]

cc @pan3793

[codecov]

Codecov Report

Attention: 24 lines in your changes are missing coverage. Please review.

Comparison is base (c183753) 48.63% compared to head (b16dbb2) 48.81%.
Report is 6 commits behind head on main.

❗ Current head b16dbb2 differs from pull request most recent head bffbb65. Consider uploading reports for the commit bffbb65 to get more accurate results

Files	Patch %	Lines
...org/apache/celeborn/common/util/PbSerDeUtils.scala	0.00%	12 Missing ⚠️
...born/common/protocol/message/ControlMessages.scala	0.00%	8 Missing ⚠️
.../apache/celeborn/common/meta/ApplicationInfo.scala	80.00%	2 Missing and 1 partial ⚠️
...ache/celeborn/common/identity/UserIdentifier.scala	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2296      +/-   ##
==========================================
+ Coverage   48.63%   48.81%   +0.18%     
==========================================
  Files         208      209       +1     
  Lines       12832    12869      +37     
  Branches     1104     1105       +1     
==========================================
+ Hits         6240     6281      +41     
+ Misses       6191     6187       -4     
  Partials      401      401              

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[SteNicholas]

@turboFei, the UserIdentifier does not just simply add into ApplicationHeartbeater, which could be add into RegistrationClientBootstrap#register. We should firstly abstract the application registeration, then add UserIdentifier into the master application meta. cc @RexXiong.

[turboFei]

@turboFei, the UserIdentifier does not just simply add into ApplicationHeartbeater, which could be add into RegistrationClientBootstrap#register. We should firstly abstract the application registeration, then add UserIdentifier into the master application meta. cc @RexXiong.

ok. thanks for the information.

[turboFei]

Raised #2365, close this one.