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Posted to jira@kafka.apache.org by "Dmitry Minkovsky (JIRA)" <ji...@apache.org> on 2018/10/23 23:42:00 UTC
[jira] [Created] (KAFKA-7536) TopologyTestDriver cannot
pre-populate GlobalKTable
Dmitry Minkovsky created KAFKA-7536:
---------------------------------------
Summary: TopologyTestDriver cannot pre-populate GlobalKTable
Key: KAFKA-7536
URL: https://issues.apache.org/jira/browse/KAFKA-7536
Project: Kafka
Issue Type: Bug
Reporter: Dmitry Minkovsky
I have a GlobalKTable that's defined as
{code}
GlobalKTable<String, ByteString> userIdsByEmail = topology
.globalTable(USER_IDS_BY_EMAIL.name,
USER_IDS_BY_EMAIL.consumed(),
Materialized.as("user-ids-by-email"));
{code}
And the following test in Spock:
{code}
def topology = // my topology
def driver = new TopologyTestDriver(topology, config())
def cleanup() {
driver.close()
}
def "create from email request"() {
def store = driver.getKeyValueStore('user-ids-by-email')
store.put('string', ByteString.copyFrom(new byte[0]))
{code}
When I run this, I get the following:
{code}
[2018-10-23 19:35:27,055] INFO (org.apache.kafka.streams.processor.internals.GlobalStateManagerImpl) mock Restoring state for global store user-ids-by-email
java.lang.NullPointerException
at org.apache.kafka.streams.processor.internals.AbstractProcessorContext.topic(AbstractProcessorContext.java:115)
at org.apache.kafka.streams.state.internals.CachingKeyValueStore.putInternal(CachingKeyValueStore.java:237)
at org.apache.kafka.streams.state.internals.CachingKeyValueStore.put(CachingKeyValueStore.java:220)
at org.apache.kafka.streams.state.internals.CachingKeyValueStore.put(CachingKeyValueStore.java:38)
at org.apache.kafka.streams.state.internals.InnerMeteredKeyValueStore.put(InnerMeteredKeyValueStore.java:206)
at org.apache.kafka.streams.state.internals.MeteredKeyValueBytesStore.put(MeteredKeyValueBytesStore.java:117)
at pony.message.MessageWriteStreamsTest.create from mailgun email request(MessageWriteStreamsTest.groovy:52)
[2018-10-23 19:35:27,189] INFO (org.apache.kafka.streams.processor.internals.StateDirectory) stream-thread [main] Deleting state directory 0_0 for task 0_0 as user calling cleanup.
{code}
I've noticed that I can {{put()}} to the store if I first write to it with {{driver.pipeInput}}. But otherwise I get the above error.
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