rkhachatryan commented on a change in pull request #12364:
URL: https://github.com/apache/flink/pull/12364#discussion_r431639052
##########
File path:
flink-runtime/src/test/java/org/apache/flink/runtime/state/filesystem/FsCheckpointStreamFactoryTest.java
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@@ -57,6 +57,23 @@ public void createStateDirectories() throws IOException {
// tests
//
------------------------------------------------------------------------
+ @Test
+ @SuppressWarnings("ConstantConditions")
+ public void testWriteFlushesIfAboveThreshold() throws IOException {
+ int fileSizeThreshold = 100;
+ final FsCheckpointStreamFactory factory =
createFactory(FileSystem.getLocalFileSystem(), fileSizeThreshold,
fileSizeThreshold);
+ final FsCheckpointStreamFactory.FsCheckpointStateOutputStream
stream =
factory.createCheckpointStateOutputStream(CheckpointedStateScope.EXCLUSIVE);
+ stream.write(new byte[fileSizeThreshold]);
+ File[] files = new File(exclusiveStateDir.toUri()).listFiles();
+ assertEquals(1, files.length);
+ File file = files[0];
+ assertEquals(fileSizeThreshold, file.length());
+ for (int i = 0; i < fileSizeThreshold; i++) {
+ stream.write(127); // should buffer without flushing
+ }
Review comment:
Done.
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