[fix] [client] PIP-344 Do not create partitioned metadata when calling pulsarClient.getPartitionsForTopic(topicName)

[poorbarcode]

Motivation

see also PIP-344 Correct the behavior of the public API pulsarClient.getPartitionsForTopic(topicName)

Background

• When calling pulsarClient.getPartitionsForTopic(topicName), Pulsar will automatically create the partitioned topic metadata if it does not exist, either using HttpLookupService or BinaryProtoLookupService.
• The partitioned topic auto-creation is dependent on pulsarClient.getPartitionsForTopic
• It triggers partitioned metadata creation by pulsarClient.getPartitionsForTopic
• And triggers the topic partition creation by producers' registration and consumers' registration.

Issue

Since the method pulsarClient.getPartitionsForTopic is a public API, and it is named getxxx, it should edit nothing.

Modifications

• Do not create partitioned metadata when calling pulsarClient.getPartitionsForTopic(topicName)

Next PRs

• Section Backward & Forward Compatibility
• Section 2 of Goals: Instead of returning a 0 partitioned metadata, respond to a not found error when calling pulsarClient.getPartitionsForTopic(String) if the topic does not exist.

Documentation

• doc
• doc-required
• doc-not-needed
• doc-complete

Matching PR in forked repository

PR in forked repository: x

[codelipenghui]

/pulsarbot run-failure-checks

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 81.25000% with 18 lines in your changes are missing coverage. Please review.

Project coverage is 73.17%. Comparing base (bbc6224) to head (2c6e826).
Report is 297 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #22206      +/-   ##
============================================
- Coverage     73.57%   73.17%   -0.40%     
- Complexity    32624    32882     +258     
============================================
  Files          1877     1890      +13     
  Lines        139502   141491    +1989     
  Branches      15299    15525     +226     
============================================
+ Hits         102638   103537     +899     
- Misses        28908    29941    +1033     
- Partials       7956     8013      +57     

Flag	Coverage Δ
inttests	27.40% <30.20%> (+2.82%)	⬆️
systests	24.71% <26.04%> (+0.39%)	⬆️
unittests	72.19% <81.25%> (-0.66%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
...pulsar/broker/admin/impl/PersistentTopicsBase.java	69.29% <100.00%> (+3.83%)	⬆️
...e/pulsar/client/impl/BinaryProtoLookupService.java	81.99% <100.00%> (-0.55%)	⬇️
...apache/pulsar/client/impl/ConsumerBuilderImpl.java	87.11% <100.00%> (+0.17%)	⬆️
...g/apache/pulsar/client/impl/HttpLookupService.java	84.95% <100.00%> (+3.70%)	⬆️
...he/pulsar/client/impl/MultiTopicsConsumerImpl.java	78.79% <100.00%> (+1.06%)	⬆️
.../transaction/TransactionCoordinatorClientImpl.java	66.07% <100.00%> (+0.30%)	⬆️
...va/org/apache/pulsar/common/protocol/Commands.java	91.01% <100.00%> (+0.42%)	⬆️
...java/org/apache/pulsar/common/util/FutureUtil.java	77.04% <100.00%> (+2.50%)	⬆️
...apache/pulsar/proxy/server/LookupProxyHandler.java	45.56% <100.00%> (-15.03%)	⬇️
...a/org/apache/pulsar/client/impl/LookupService.java	0.00% <0.00%> (ø)
... and 2 more

... and 340 files with indirect coverage changes

[poorbarcode]

Rebase master

[lhotari]

There's a reported bug #23203 which is related to this change.