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https://issues.apache.org/jira/browse/FLINK-8755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16378940#comment-16378940
]
ASF GitHub Bot commented on FLINK-8755:
---------------------------------------
Github user NicoK commented on a diff in the pull request:
https://github.com/apache/flink/pull/5581#discussion_r170993496
--- Diff:
flink-runtime/src/test/java/org/apache/flink/runtime/io/network/partition/SpillableSubpartitionTest.java
---
@@ -222,59 +219,24 @@ public void testConsumeSpilledPartition() throws
Exception {
assertEquals(1, listener.getNumNotifications());
assertFalse(reader.nextBufferIsEvent()); // buffer
- BufferAndBacklog read = reader.getNextBuffer();
- assertNotNull(read);
- assertTrue(read.buffer().isBuffer());
+ assertNextBuffer(reader, BUFFER_DATA_SIZE, true, 2, false,
true);
assertEquals(2, partition.getBuffersInBacklog());
- assertEquals(partition.getBuffersInBacklog(),
read.buffersInBacklog());
- assertFalse(read.buffer().isRecycled());
- read.buffer().recycleBuffer();
- assertTrue(read.buffer().isRecycled());
- assertFalse(read.nextBufferIsEvent());
assertFalse(reader.nextBufferIsEvent()); // buffer
- read = reader.getNextBuffer();
- assertNotNull(read);
- assertTrue(read.buffer().isBuffer());
+ assertNextBuffer(reader, BUFFER_DATA_SIZE, true, 1, true, true);
assertEquals(1, partition.getBuffersInBacklog());
- assertEquals(partition.getBuffersInBacklog(),
read.buffersInBacklog());
- assertFalse(read.buffer().isRecycled());
- read.buffer().recycleBuffer();
- assertTrue(read.buffer().isRecycled());
- assertTrue(read.nextBufferIsEvent());
assertTrue(reader.nextBufferIsEvent()); // event
- read = reader.getNextBuffer();
- assertNotNull(read);
- assertFalse(read.buffer().isBuffer());
+ assertNextEvent(reader, BUFFER_DATA_SIZE, null, true, 1, false,
true);
--- End diff --
almost - it remains `@Nullable` in
`SubpartitionTestBase#assertNextBufferOrEvent`
> SpilledSubpartitionView wrongly relys on the backlog for determining whether
> more data is available
> ---------------------------------------------------------------------------------------------------
>
> Key: FLINK-8755
> URL: https://issues.apache.org/jira/browse/FLINK-8755
> Project: Flink
> Issue Type: Sub-task
> Components: Network
> Reporter: Nico Kruber
> Assignee: Nico Kruber
> Priority: Blocker
> Fix For: 1.5.0
>
>
> {code}
> public BufferAndBacklog getNextBuffer() throws IOException,
> InterruptedException {
> //...
> int newBacklog = parent.decreaseBuffersInBacklog(current);
> return new BufferAndBacklog(current, newBacklog > 0, newBacklog,
> nextBufferIsEvent);
> {code}
> relies on the backlog to signal further data availability. However, if there
> are only events left in the buffer queue, their buffers are not included in
> the backlog counting and therefore, {{isMoreAvailable}} will be wrongly
> {{false}} here.
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