Pierre Villard created NIFI-11794:
-------------------------------------
Summary: RedisStateProvider failing when used with GCP Memorystore
Key: NIFI-11794
URL: https://issues.apache.org/jira/browse/NIFI-11794
Project: Apache NiFi
Issue Type: Bug
Components: Extensions
Reporter: Pierre Villard
Assignee: Pierre Villard
Trying to configure the NiFi cluster state provider with the Redis
implementation against a Google Cloud Platform Memorystore instance.
I can see that there is no state saved in the redis instance.
When trying to clear state of a processor:
{code:java}
2023-07-11 17:57:39,007 ERROR [NiFi Web Server-22]
o.a.nifi.web.api.config.ThrowableMapper An unexpected error has occurred:
java.lang.NullPointerException. Returning Internal Server Error response.
java.lang.NullPointerException: null
at
org.apache.nifi.redis.state.RedisStateProvider.lambda$replace$1(RedisStateProvider.java:248)
at
org.apache.nifi.redis.state.RedisStateProvider.withConnection(RedisStateProvider.java:313)
at
org.apache.nifi.redis.state.RedisStateProvider.replace(RedisStateProvider.java:207)
at
org.apache.nifi.redis.state.RedisStateProvider.clear(RedisStateProvider.java:263)
at
org.apache.nifi.controller.state.manager.StandardStateManagerProvider$1.clear(StandardStateManagerProvider.java:395)
at
org.apache.nifi.controller.state.StandardStateManager.clear(StandardStateManager.java:85)
at
org.apache.nifi.web.dao.impl.StandardComponentStateDAO.clearState(StandardComponentStateDAO.java:58)
at
org.apache.nifi.web.dao.impl.StandardComponentStateDAO.clearState(StandardComponentStateDAO.java:72)
at
org.apache.nifi.web.dao.impl.StandardComponentStateDAO$$FastClassBySpringCGLIB$$51589743.invoke(<generated>)
{code}
However this action results in creating the key in the Redis instance:
{code:java}
# redis-cli -h ... -p ... -a ... --tls --cacert /tmp/server-ca.pem
...:6378> KEYS *
1) "nifi/components/46025cdf-0189-1000-ffff-ffffc11ae372"
...:6378> GET "nifi/components/46025cdf-0189-1000-ffff-ffffc11ae372"
"{\"version\":0,\"encodingVersion\":1,\"stateValues\":{}}"
{code}
The configuration in state-management.xml is looking like:
{code:java}
<cluster-provider>
<id>redis-provider</id>
<class>org.apache.nifi.redis.state.RedisStateProvider</class>
<property name="Redis Mode">Standalone</property>
<property name="Connection String">...:6378</property>
<property name="Password">...</property>
<property name="Enable TLS">true</property>
</cluster-provider> {code}
CA cert has been added in the NiFi truststore.
Still debugging the code to figure out the issue and will also add additional
logs.
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