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https://issues.apache.org/jira/browse/NIFI-9019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17394780#comment-17394780
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Joseph Gresock commented on NIFI-9019:
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This error appears to occur when using Sentinel mode with a Database index
other than 0.
> Redis Sentinel Database index > 0 connections error in v. 1.14.0
> ----------------------------------------------------------------
>
> Key: NIFI-9019
> URL: https://issues.apache.org/jira/browse/NIFI-9019
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Affects Versions: 1.14.0
> Reporter: Jens M Kofoed
> Priority: Major
>
> After upgrading from v. 1.13.2 to v. 1.14.0 I have issues with Redis
> connetions
> I seems if a RedisConnectionPoolService is configured with a Database Index =
> 0 there are no issues.
> But if I have the Database Index set to 3 I got the following errors in the
> log:
> 2021-08-06 11:18:21,123 INFO [Timer-Driven Process Thread-13]
> o.a.n.r.s.RedisConnectionPoolService
> RedisConnectionPoolService[id=160a1056-017b-1000-0000-00005533ce4b]
> Connecting to Redis in sentinel mode...
> 2021-08-06 11:18:21,123 INFO [Timer-Driven Process Thread-13]
> o.a.n.r.s.RedisConnectionPoolService
> RedisConnectionPoolService[id=160a1056-017b-1000-0000-00005533ce4b] Redis
> master = mymaster
> 2021-08-06 11:18:21,123 INFO [Timer-Driven Process Thread-13]
> o.a.n.r.s.RedisConnectionPoolService
> RedisConnectionPoolService[id=160a1056-017b-1000-0000-00005533ce4b] Redis
> sentinel at redis-01:26379
> 2021-08-06 11:18:21,123 INFO [Timer-Driven Process Thread-13]
> o.a.n.r.s.RedisConnectionPoolService
> RedisConnectionPoolService[id=160a1056-017b-1000-0000-00005533ce4b] Redis
> sentinel at redis-02:26379
> 2021-08-06 11:18:21,123 INFO [Timer-Driven Process Thread-13]
> o.a.n.r.s.RedisConnectionPoolService
> RedisConnectionPoolService[id=160a1056-017b-1000-0000-00005533ce4b] Redis
> sentinel at redis-03:26379
> 2021-08-06 11:18:21,124 INFO [Timer-Driven Process Thread-13]
> redis.clients.jedis.JedisSentinelPool Trying to find master from available
> Sentinels...
> 2021-08-06 11:18:21,124 DEBUG [Timer-Driven Process Thread-13]
> redis.clients.jedis.JedisSentinelPool Connecting to Sentinel redis-01:26379
> 2021-08-06 11:18:21,124 WARN [NiFi Web Server-4964]
> org.apache.nifi.audit.ProcessorAuditor Unable to record actions: null
> 2021-08-06 11:18:21,214 INFO [Flow Service Tasks Thread-1]
> o.a.nifi.controller.StandardFlowService Saved flow controller
> org.apache.nifi.controller.FlowController@33ab3784 // Another save pending =
> false
> 2021-08-06 11:18:31,134 WARN [Timer-Driven Process Thread-13]
> redis.clients.jedis.JedisSentinelPool Cannot get master address from sentinel
> running @ i-redis-01:26379. Reason: {}. Trying next one.
> redis.clients.jedis.exceptions.JedisConnectionException:
> javax.net.ssl.SSLException: Read timed out
> at redis.clients.jedis.Connection.flush(Connection.java:342)
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