PARQUET-1550: CleanUtil does not work in Java 11#654

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Fokko merged 3 commits intoapache:masterfrom

Fokko:fd-fix-cleanutils

Jul 4, 2019

Commits on Jun 19, 2019

PARQUET-1550: CleanUtil does not work in Java 11
Fokko
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Commits on Jun 25, 2019

Write to the logger instead
Fokko
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Commits on Jun 26, 2019

Make it Javadoc
Fokko
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