Use thread local decoder cache in Binary toStringUsingUTF8() #1531
Description
In Binary toStringUsingUTF8(), new String(...) is slower because it instantiates a new Decoder, while Charset#decode uses a thread-local decoder cache, it is much faster.
ByteArraySliceBackedBinary is using Charset#decode, while, ByteArrayBackedBinary and ByteBufferBackedBinary are still using new String()
Reporter: Zhenxiao Luo / @zhenxiao
Assignee: Zhenxiao Luo / @zhenxiao
Related issues:
- String decode using 'new String' is slow (duplicates)
Note: This issue was originally created as PARQUET-74. Please see the migration documentation for further details.