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https://issues.apache.org/jira/browse/HADOOP-18546?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17642457#comment-17642457
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ASF GitHub Bot commented on HADOOP-18546:
-----------------------------------------
steveloughran commented on code in PR #5176:
URL: https://github.com/apache/hadoop/pull/5176#discussion_r1038058686
##########
hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/TestAbfsInputStream.java:
##########
@@ -495,6 +509,199 @@ public void testSuccessfulReadAhead() throws Exception {
checkEvictedStatus(inputStream, 0, true);
}
+ /**
+ * This test expects InProgressList is not purged by the inputStream close.
+ * The readBuffer will move to completedList and then finally should get
evicted.
+ */
+ @Test
+ public void testStreamPurgeDuringReadAheadCallExecuting() throws Exception {
+ AbfsClient client = getMockAbfsClient();
+ AbfsRestOperation successOp = getMockRestOp();
+
+ final AtomicInteger movedToInProgressList = new AtomicInteger(0);
+ final AtomicInteger movedToCompletedList = new AtomicInteger(0);
+ final AtomicBoolean preClosedAssertion = new AtomicBoolean(false);
+
+ Mockito.doAnswer(invocationOnMock -> {
+ movedToInProgressList.incrementAndGet();
+ while (movedToInProgressList.get() < 3 || !preClosedAssertion.get())
{
+
+ }
+ movedToCompletedList.incrementAndGet();
+ return successOp;
+ })
+ .when(client)
Review Comment:
it may be slow, but at least there's no assertion that something finishes
*before* a specific timeout. those are the tests which really have problems on
slow networks/overloaded systems
> disable purging list of in progress reads in abfs stream closed
> ---------------------------------------------------------------
>
> Key: HADOOP-18546
> URL: https://issues.apache.org/jira/browse/HADOOP-18546
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/azure
> Affects Versions: 3.3.4
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Major
> Labels: pull-request-available
>
> turn off the prune of in progress reads in
> ReadBufferManager::purgeBuffersForStream
> this will ensure active prefetches for a closed stream complete. they wiill
> then get to the completed list and hang around until evicted by timeout, but
> at least prefetching will be safe.
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