fix: Make the dynamic column optional in parquet import

[bigsheeper]

issue: https://github.com/milvus-io/milvus/issues/32729

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 83.87097% with 5 lines in your changes are missing coverage. Please review.

Project coverage is 81.78%. Comparing base (77f4f0c) to head (38d81f7). Report is 23 commits behind head on master.

Additional details and impacted files

[](https://app.codecov.io/gh/milvus-io/milvus/pull/32738?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=milvus-io) ```diff @@ Coverage Diff @@ ## master #32738 +/- ## ========================================== + Coverage 81.72% 81.78% +0.05% ========================================== Files 998 999 +1 Lines 125433 124297 -1136 ========================================== - Hits 102510 101653 -857 + Misses 19075 18777 -298 - Partials 3848 3867 +19 ``` | [Files](https://app.codecov.io/gh/milvus-io/milvus/pull/32738?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=milvus-io) | Coverage Δ | | |---|---|---| | [internal/util/importutilv2/numpy/reader.go](https://app.codecov.io/gh/milvus-io/milvus/pull/32738?src=pr&el=tree&filepath=internal%2Futil%2Fimportutilv2%2Fnumpy%2Freader.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=milvus-io#diff-aW50ZXJuYWwvdXRpbC9pbXBvcnR1dGlsdjIvbnVtcHkvcmVhZGVyLmdv) | `73.07% <100.00%> (ø)` | | | [internal/util/importutilv2/numpy/util.go](https://app.codecov.io/gh/milvus-io/milvus/pull/32738?src=pr&el=tree&filepath=internal%2Futil%2Fimportutilv2%2Fnumpy%2Futil.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=milvus-io#diff-aW50ZXJuYWwvdXRpbC9pbXBvcnR1dGlsdjIvbnVtcHkvdXRpbC5nbw==) | `42.65% <ø> (-6.75%)` | :arrow_down: | | [internal/util/importutilv2/parquet/util.go](https://app.codecov.io/gh/milvus-io/milvus/pull/32738?src=pr&el=tree&filepath=internal%2Futil%2Fimportutilv2%2Fparquet%2Futil.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=milvus-io#diff-aW50ZXJuYWwvdXRpbC9pbXBvcnR1dGlsdjIvcGFycXVldC91dGlsLmdv) | `74.44% <100.00%> (+0.84%)` | :arrow_up: | | [internal/util/importutilv2/parquet/reader.go](https://app.codecov.io/gh/milvus-io/milvus/pull/32738?src=pr&el=tree&filepath=internal%2Futil%2Fimportutilv2%2Fparquet%2Freader.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=milvus-io#diff-aW50ZXJuYWwvdXRpbC9pbXBvcnR1dGlsdjIvcGFycXVldC9yZWFkZXIuZ28=) | `65.71% <33.33%> (-1.45%)` | :arrow_down: | | [internal/util/importutilv2/common/util.go](https://app.codecov.io/gh/milvus-io/milvus/pull/32738?src=pr&el=tree&filepath=internal%2Futil%2Fimportutilv2%2Fcommon%2Futil.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=milvus-io#diff-aW50ZXJuYWwvdXRpbC9pbXBvcnR1dGlsdjIvY29tbW9uL3V0aWwuZ28=) | `88.00% <88.00%> (ø)` | | ... and [138 files with indirect coverage changes](https://app.codecov.io/gh/milvus-io/milvus/pull/32738/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=milvus-io)

[czs007]

/approve /lgtm

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: bigsheeper, czs007

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