Alexander Bukarev created NIFI-5830:
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Summary: RedisConnectionPoolService does not work with Standalone
Redis using non-localhost deployment
Key: NIFI-5830
URL: https://issues.apache.org/jira/browse/NIFI-5830
Project: Apache NiFi
Issue Type: Bug
Components: Core Framework
Affects Versions: 1.8.0
Environment: Ubuntu 16 LTS, NiFi 1.8.0
Reporter: Alexander Bukarev
The controller service {{RedisConnectionPoolService}} does not work with
Standalone Redis which is deployed on a host other than {{localhost}} (or if
Redis uses the port other than {{6379}}). So the only way to use
{{RedisConnectionPoolService}} is to deploy Redis on {{localhost}} and run it
with default port {{6379}}.
*Steps*:
Let's assume our Redis is deployed on host *redis* (not {{localhost}}) and it
listens port 6379 (I use docker for that)
# Create a {{PutDistributedMapCache}} processor
# Configure the processor with {{RedisDistributedMapCacheClientService}}
# Create a new controller service: {{RedisConnectionPoolService}}
#* Choose *Standalone* Redis Mode
#* Use *redis:6379* as a Connection String
# Connect some incoming flow to the {{PutDistributedMapCache}} processor (I've
used {{GetFile}} as a producer) and run the whole flow. Allow {{GetFile}} to
consume some file (if you use {{GetFile}} ro reproduce) and wait some time till
the {{PutDistributedMapCache}} will be schedulled.
Result:
The processor is failed to run. And we can see the error in logs:
{panel}2018-11-17 06:06:47,572 WARN [Timer-Driven Process Thread-2]
o.a.n.controller.tasks.ConnectableTask Administratively Yielding PutDistribu
tedMapCache[id=2041c81f-0167-1000-c82f-d7da2155dfb4] due to uncaught Exception:
org.springframework.data.redis.RedisConnectionFailureExce
ption: Cannot get Jedis connection; nested exception is
redis.clients.jedis.exceptions.JedisConnectionException: Could not get a
resource
from the pool
org.springframework.data.redis.RedisConnectionFailureException: Cannot get
Jedis connection; nested exception is
redis.clients.jedis.exceptions.JedisConnectionException: Could not get a
resource from the pool
at
org.springframework.data.redis.connection.jedis.JedisConnectionFactory.fetchJedisConnector(JedisConnectionFactory.java:281)
at
org.springframework.data.redis.connection.jedis.JedisConnectionFactory.getConnection(JedisConnectionFactory.java:464)
at
org.apache.nifi.redis.service.RedisConnectionPoolService.getConnection(RedisConnectionPoolService.java:89)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.apache.nifi.controller.service.StandardControllerServiceInvocationHandler.invoke(StandardControllerServiceInvocationHandler.java:84)
at com.sun.proxy.$Proxy128.getConnection(Unknown Source)
at
org.apache.nifi.redis.service.RedisDistributedMapCacheClientService.withConnection(RedisDistributedMapCacheClientService.java:343)
at
org.apache.nifi.redis.service.RedisDistributedMapCacheClientService.put(RedisDistributedMapCacheClientService.java:189)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.apache.nifi.controller.service.StandardControllerServiceInvocationHandler.invoke(StandardControllerServiceInvocationHandler.java:84)
at com.sun.proxy.$Proxy124.put(Unknown Source)
at
org.apache.nifi.processors.standard.PutDistributedMapCache.onTrigger(PutDistributedMapCache.java:202){panel}
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