Address code style issues in hudi-client package

[hudi-bot]

The purpose is to address style issues and other small ones (e.g., redundant code, etc.) before PRs in this package.

JIRA info

• Link: https://issues.apache.org/jira/browse/HUDI-649
• Type: Improvement
• Epic: https://issues.apache.org/jira/browse/HUDI-2261

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Comments

29/Feb/20 02:34;guoyihua;[~vinoth] ^;;;

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29/Feb/20 02:41;vinoth;Lets make this more specific? I dont believe in sweeping cleanups;;;