Github user parthchandra commented on a diff in the pull request:
https://github.com/apache/drill/pull/826#discussion_r117297653
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetRecordWriter.java
---
@@ -380,14 +384,21 @@ public void endRecord() throws IOException {
// since ParquetFileWriter will overwrite empty output file (append
is not supported)
// we need to re-apply file permission
- parquetFileWriter = new ParquetFileWriter(conf, schema, path,
ParquetFileWriter.Mode.OVERWRITE);
+ if (useConfiguredBlockSize) {
+ // Round up blockSize to multiple of 64K.
+ long writeBlockSize = ((long)
ceil((double)blockSize/BLOCKSIZE_MULTIPLE)) * BLOCKSIZE_MULTIPLE;
+ // Passing writeBlockSize creates files with this blockSize
instead of filesystem default blockSize.
+ // Currently, this is supported only by filesystems included in
+ // BLOCK_FS_SCHEMES (ParquetFileWriter.java in parquet-mr), which
includes HDFS.
+ // For other filesystems, it uses default blockSize configured for
the file system.
+ parquetFileWriter = new ParquetFileWriter(conf, schema, path,
ParquetFileWriter.Mode.OVERWRITE, writeBlockSize, 0);
+ } else {
+ parquetFileWriter = new ParquetFileWriter(conf, schema, path,
ParquetFileWriter.Mode.OVERWRITE);
--- End diff --
Right, it doesn't. The changing of the option name (and semantics) make
this much clearer.
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