Daniel Weeks created PARQUET-75:
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Summary: String decode using 'new String' is slow
Key: PARQUET-75
URL: https://issues.apache.org/jira/browse/PARQUET-75
Project: Parquet
Issue Type: Bug
Components: parquet-mr
Reporter: Daniel Weeks
Assignee: Daniel Weeks
There are three implementations of the Binary class and only one is using the
faster 'UTF8.decode' in the 'toStringUsingUTF8' method. This fixes them to all
use the faster UTF8.decode.
As noted in the comments, the 'new String' approach creates a new decoder each
time, which is slower than the cached instance used by 'UTF8.decode'.
#1. ByteArraySliceBackedBinary <-- UTF8.decode
#2. ByteArrayBackedBinary <-- new String
#3. ByteBufferBackedBinary <-- new String
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