Github user StefanRRichter commented on a diff in the pull request:
https://github.com/apache/flink/pull/2544#discussion_r80318790
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/state/filesystem/FsCheckpointStreamFactory.java
---
@@ -301,9 +301,16 @@ public StreamStateHandle closeAndGetHandle() throws
IOException {
}
else {
flush();
+
+ long size = -1;
--- End diff --
I am not sure if returning -1 as size on exception is ideal. Currently,
this value should one be used in the calculation of meta data, but one might be
tempted to use it e.g. to preallocate a byte[] to read the file into, so this
should at least be documented in `StateObject`. Furthermore, we make the
assumption that the stream position is also equal to the final file size. Not
entirely sure if this holds for all streams and file systems, but I guess this
is the best we can do without asking the file system for meta data.
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