fix: HUDI- Skip partition path extraction for non partitioned tables

[PavithranRick]

Describe the issue this Pull Request addresses

Current write-path logic performs partition path resolution and partition-switch checks for every record, even when the table is non-partitioned.

For large datasets (e.g., terabyte scale), this results in significant overhead because:

• Fetching the partition path requires materializing/deserializing the full binary record, which is expensive.
• The canWrite() check is invoked for every record through HoodieRowCreateHandle → BulkInsertDataInternalWriterHelper.
• For non-partitioned tables, this logic is unnecessary because the write handle never needs to switch.

This PR optimizes the write path by completely bypassing partition path lookup and write-handle switching for non-partitioned tables.

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Summary and Changelog

This PR introduces the following improvements:

• Add early detection using HoodieTable / HoodieTableMetaClient to determine if the table is partitioned.
• If the table is unpartitioned, skip:
  • partition path extraction,
  • partition switch checks in canWrite(),
  • any record-level partition materialization.
• Allow records to be streamed directly without triggering heavy byte-array deserialization.
• Prevent unnecessary overhead in BaseCreateHandle and HoodieRowCreateHandle for unpartitioned tables.

These changes significantly reduce CPU cost for bulk insert workloads on non-partitioned tables.

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Impact

• Performance: Major improvement for non-partitioned tables, especially for binary-encoded record formats.
• Behavior: No functional change for partitioned tables.
• API: No user-facing API changes; logic is internal.

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Risk Level

Low

• Optimization path is only taken when the table is explicitly detected as non-partitioned.
• Behavior for partitioned tables remains unchanged.
• Write-path tests mitigate regression risk.

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Documentation Update

None.
This PR does not introduce new configs or change user-facing behavior.

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Contributor's checklist

• Read through contributor's guide
• Enough context is provided in the sections above
• Adequate tests were added if applicable

[hudi-bot]

CI report:

• 3b0a3ca Azure: FAILURE

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