Github user sekruse commented on a diff in the pull request:
https://github.com/apache/flink/pull/762#discussion_r31562256
--- Diff:
flink-core/src/main/java/org/apache/flink/api/common/io/FileInputFormat.java ---
@@ -628,9 +692,10 @@ public void open(FileInputSplit fileSplit) throws
IOException {
* @see org.apache.flink.api.common.io.InputStreamFSInputWrapper
*/
protected FSDataInputStream decorateInputStream(FSDataInputStream
inputStream, FileInputSplit fileSplit) throws Throwable {
- // Wrap stream in a extracting (decompressing) stream if file
ends with .deflate.
- if (fileSplit.getPath().getName().endsWith(DEFLATE_SUFFIX)) {
- return new InflaterInputStreamFSInputWrapper(stream);
+ // Wrap stream in a extracting (decompressing) stream if file
ends with a known compression file extension.
+ InflaterInputStreamFactory<?> inflaterInputStreamFactory =
getInflaterInputStreamFactory(fileSplit.getPath());
+ if (inflaterInputStreamFactory != null) {
+ return new
InputStreamFSInputWrapper(inflaterInputStreamFactory.create(stream));
--- End diff --
It might also be the case that the stream was not compressed at all. It
would of course be nice to react appropriately to a missing codec, but how
would we know if the current input split belongs to an uncompressed file or a
compressed file with an unknown codec?
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