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The following commit(s) were added to refs/heads/trunk by this push:
     new 886daf5  KAFKA-6234; Increased timeout value for lowWatermark response 
to fix transient failures (#4238)
886daf5 is described below

commit 886daf5fca70846ad0ce5b85f2522cf08b08ee44
Author: Sönke Liebau <soenke.lie...@opencore.com>
AuthorDate: Fri Apr 13 00:45:38 2018 +0200

    KAFKA-6234; Increased timeout value for lowWatermark response to fix 
transient failures (#4238)
    
    Removed timeout from get call that caused the test to fail occasionally, 
this will instead fall back to the wrapping waitUntilTrue timeout. Also added 
unnesting of exceptions from ExecutionException that was originally missing and 
put the retrieved value for lowWatermark in the fail message for better 
readability in case of test failure.
    
    Reviewers: Ismael Juma <ism...@juma.me.uk>, Jason Gustafson 
<ja...@confluent.io>
---
 .../kafka/api/AdminClientIntegrationTest.scala      | 21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

diff --git 
a/core/src/test/scala/integration/kafka/api/AdminClientIntegrationTest.scala 
b/core/src/test/scala/integration/kafka/api/AdminClientIntegrationTest.scala
index c59fe6d..33c14c6 100644
--- a/core/src/test/scala/integration/kafka/api/AdminClientIntegrationTest.scala
+++ b/core/src/test/scala/integration/kafka/api/AdminClientIntegrationTest.scala
@@ -38,7 +38,7 @@ import org.apache.kafka.common.{KafkaFuture, TopicPartition, 
TopicPartitionRepli
 import org.apache.kafka.common.acl._
 import org.apache.kafka.common.config.ConfigResource
 import org.apache.kafka.common.errors._
-import org.junit.{After, Before, Ignore, Rule, Test}
+import org.junit.{After, Before, Rule, Test}
 import org.apache.kafka.common.requests.{DeleteRecordsRequest, 
MetadataResponse}
 import org.apache.kafka.common.resource.{Resource, ResourceType}
 import org.junit.rules.Timeout
@@ -741,7 +741,6 @@ class AdminClientIntegrationTest extends 
IntegrationTestHarness with Logging {
   }
 
   @Test
-  @Ignore // Disabled temporarily until flakiness is resolved
   def testLogStartOffsetCheckpoint(): Unit = {
     createTopic(topic, numPartitions = 2, replicationFactor = serverCount)
 
@@ -751,8 +750,8 @@ class AdminClientIntegrationTest extends 
IntegrationTestHarness with Logging {
 
     sendRecords(producers.head, 10, topicPartition)
     var result = client.deleteRecords(Map(topicPartition -> 
RecordsToDelete.beforeOffset(5L)).asJava)
-    var lowWatermark = 
result.lowWatermarks().get(topicPartition).get().lowWatermark()
-    assertEquals(5L, lowWatermark)
+    var lowWatermark: Option[Long] = 
Some(result.lowWatermarks.get(topicPartition).get.lowWatermark)
+    assertEquals(Some(5), lowWatermark)
 
     for (i <- 0 until serverCount) {
       killBroker(i)
@@ -767,16 +766,16 @@ class AdminClientIntegrationTest extends 
IntegrationTestHarness with Logging {
       // Need to retry if leader is not available for the partition
       result = client.deleteRecords(Map(topicPartition -> 
RecordsToDelete.beforeOffset(0L)).asJava)
 
+      lowWatermark = None
       val future = result.lowWatermarks().get(topicPartition)
       try {
-        lowWatermark = future.get(1000L, TimeUnit.MILLISECONDS).lowWatermark()
-        lowWatermark == 5L
+        lowWatermark = Some(future.get.lowWatermark)
+        lowWatermark.contains(5L)
       } catch {
-        case e: LeaderNotAvailableException => false
-      }
-
-    }, "Expected low watermark of the partition to be 5L")
-
+        case e: ExecutionException if 
e.getCause.isInstanceOf[LeaderNotAvailableException] ||
+          e.getCause.isInstanceOf[NotLeaderForPartitionException] => false
+        }
+    }, s"Expected low watermark of the partition to be 5 but got 
${lowWatermark.getOrElse("no response within the timeout")}")
     client.close()
   }
 

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