Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/4537#discussion_r29533746
--- Diff:
external/kafka/src/main/scala/org/apache/spark/streaming/kafka/KafkaTestUtils.scala
---
@@ -227,10 +229,34 @@ private class KafkaTestUtils extends Logging {
tryAgain(1)
}
+ /** wait until the leader offset for the given topic/partition equals
the specified offset */
+ def waitUntilLeaderOffset(
+ topic: String,
+ partition: Int,
+ offset: Long): Unit = {
+ eventually(Time(10000), Time(100)) {
+ val kc = new KafkaCluster(Map("metadata.broker.list" ->
brokerAddress))
+ val tp = TopicAndPartition(topic, partition)
+ val llo =
kc.getLatestLeaderOffsets(Set(tp)).right.get.apply(tp).offset
+ assert(
+ llo == offset,
+ s"$topic $partition $offset not reached after timeout")
+ }
+ }
+
private def waitUntilMetadataIsPropagated(topic: String, partition:
Int): Unit = {
eventually(Time(10000), Time(100)) {
assert(
- server.apis.metadataCache.containsTopicAndPartition(topic,
partition),
+ server.apis.metadataCache.getPartitionInfo(topic, partition) match
{
--- End diff --
And also explain in a comment what this code does? For example, I am not
sure what is `isr` in `leaderAndIsr`. And what are all these conditions &&-ed
together.
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