Github user pnowojski commented on a diff in the pull request:
https://github.com/apache/flink/pull/4146#discussion_r124564731
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/blob/BlobClient.java ---
@@ -593,9 +594,7 @@ private void sendPutHeader(OutputStream outputStream,
JobID jobID, String key) t
* the BLOB server or if the BLOB server cannot delete the file
*/
public void delete(BlobKey key) throws IOException {
- if (key == null) {
- throw new IllegalArgumentException("BLOB key must not
be null");
- }
+ checkArgument(key != null, "BLOB key must not be null.");
--- End diff --
`requireNonNull`?
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