[PR] [To dev/1.3][Pipe] Fix pipe tablet memory self-lock during batching (#18266) [iotdb]

["Caideyipi (via GitHub)" <gi...@apache.org>]

Caideyipi opened a new pull request, #18282:
URL: https://github.com/apache/iotdb/pull/18282

   ## Description
   
   Backport of #18266 to `dev/1.3`.
   
   A realtime Pipe can retain raw tablet events whose zero-sized `PipeTabletMemoryBlock` instances are accounted through `forceResize`. Before this fix, resize checked only remaining non-floating memory and could exhaust the pool, preventing the sink batch from allocating the memory needed to transfer and release those tablets.
   
   This change applies the existing tablet/TsFile hard admission thresholds when a typed data-structure block grows through resize. Normal blocks, including sink batch buffers, keep the existing total-memory check.
   
   The cherry-pick conflict was adapted to the 1.3 memory-manager implementation, which tracks usage through `usedMemorySizeInBytes`. The regression test uses the branch's configured non-floating memory size.
   
   ## Tests
   
   ```
   mvn test -pl iotdb-core/datanode -Dtest=PipeMemoryManagerResizeTest -DforkCount=0 -Dsurefire.forkNumber=0 -Ddevelocity.off=true
   ```
   
   Result: 1 test run, 0 failures, 0 errors, 0 skipped. Checkstyle, Spotless, main compilation, and test compilation also passed.
   
   <hr>
   
   This PR has:
   - [x] been self-reviewed.
   - [x] added comments explaining the intent of the code.
   - [x] added a unit test for the resized-tablet admission path.
   


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Re: [PR] [To dev/1.3][Pipe] Fix pipe tablet memory self-lock during batching (#18266) [iotdb]

["jt2594838 (via GitHub)" <gi...@apache.org>]

jt2594838 merged PR #18282:
URL: https://github.com/apache/iotdb/pull/18282


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