Fixes a minor deprecation warning

[res-life]

This fixes #3374

Signed-off-by: Chong Gao res_life@163.com

[res-life]

1. getAllStatistics deprecated

[WARNING] [Warn] GpuMultiFileReader.scala:87: 
method getAllStatistics in class FileSystem is deprecated: 
see corresponding Javadoc for more information.

This is because of getAllStatistics is deprecated in hadoop-client-api-3.3.1.jar which is depended by spark 3.2.0.
Recommends to use

see:

https://hadoop.apache.org/docs/r2.8.2/api/org/apache/hadoop/fs/FileSystem.html

But getGlobalStorageStatistics does not provide the capacity to fetch thread local statistics like previous version:

FileSystem.getAllStatistics.asScala.map(_.getThreadStatistics.getBytesRead).sum

So, just leave it as it is. BTW, one issue is filed: #4219
2. getDecimalMetadata deprecated

[WARNING] [Warn] sql-plugin/src/main/scala/com/nvidia/spark/rapids/GpuParquetScan.scala:604: 
method getDecimalMetadata in class PrimitiveType is deprecated: 
see corresponding Javadoc for more information.

spark 3.0.1 uses parquet-column-1.10.1.jar and spark 3.2.0 uses parquet-column-1.12.1.jar.
parquet-column 1.12.1 deprecated the getDecimalMetadata method and recommends to use "getLogicalTypeAnnotation()".
parquet-column-1.10.1 does not have getLogicalTypeAnnotation.
So if want to remove the warning we must write shim codes separately for the 2 versions.
It's a little heavy, let's keep it.

3. isDirectory deprecated

sql-plugin/src/main/scala/org/apache/spark/sql/execution/datasources/rapids/GpuPartitioningUtils.scala:121:
 method isDirectory in class FileSystem is deprecated: 
see corresponding Javadoc for more information.

Fixed.

[res-life]

build