lightning: fix parquet parser for decimal type (#1272)

[glorv]

This is an automated cherry-pick of #1272

What problem does this PR solve?

Fix parse parquet file when the corresponding type is decimal with FIXED_LEN_BYTE_ARRAY or BINARY

What is changed and how it works?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Code changes

Side effects

Related changes

Release note

• Fix parquet parse when parse decimal type

[ti-chi-bot]

@glorv: This cherry pick PR is for a release branch and has not yet been approved by release team.
Adding the do-not-merge/cherry-pick-not-approved label.

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[ti-chi-bot]

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This pull request has been approved by:

• 3pointer
• kennytm

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[kennytm]

what's the difference between this and #1275 though

[glorv]

what's the difference between this and #1275 though

No different but the target branch. release-5.1-20210709 is created and used by DBaaS. Not sure why they don't depned on release-5.1 directly. 😒

[glorv]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: b864b86