druid: Redis cluster connection error while trying to use as cache

WARN [ForkJoinPool-1-worker-22] org.apache.druid.client.cache.AbstractRedisCache - Exception pushing item to cache redis.clients.jedis.exceptions.JedisNoReachableClusterNodeException: No reachable node in cluster at redis.clients.jedis.JedisSlotBasedConnectionHandler.getConnection(JedisSlotBasedConnectionHandler.java:57) ~[jedis-2.9.0.jar:?] at redis.clients.jedis.JedisSlotBasedConnectionHandler.getConnectionFromSlot(JedisSlotBasedConnectionHandler.java:74) ~[jedis-2.9.0.jar:?] at redis.clients.jedis.JedisClusterCommand.runWithRetries(JedisClusterCommand.java:116) ~[jedis-2.9.0.jar:?] at redis.clients.jedis.JedisClusterCommand.runBinary(JedisClusterCommand.java:60) ~[jedis-2.9.0.jar:?] at redis.clients.jedis.BinaryJedisCluster.setex(BinaryJedisCluster.java:268) ~[jedis-2.9.0.jar:?] at org.apache.druid.client.cache.RedisClusterCache.putToRedis(RedisClusterCache.java:46) ~[druid-redis-cache-0.20.0.jar:0.20.0] at org.apache.druid.client.cache.AbstractRedisCache.put(AbstractRedisCache.java:84) [druid-redis-cache-0.20.0.jar:0.20.0] at org.apache.druid.client.cache.ForegroundCachePopulator$1.after(ForegroundCachePopulator.java:114) [druid-server-0.20.0.jar:0.20.0] at org.apache.druid.java.util.common.guava.WrappingYielder.close(WrappingYielder.java:98) [druid-core-0.20.0.jar:0.20.0] at org.apache.druid.java.util.common.guava.MergeSequence.makeYielder(MergeSequence.java:146) [druid-core-0.20.0.jar:0.20.0] at org.apache.druid.java.util.common.guava.MergeSequence.toYielder(MergeSequence.java:105) [druid-core-0.20.0.jar:0.20.0] at org.apache.druid.java.util.common.guava.ParallelMergeCombiningSequence$ResultBatch.fromSequence(ParallelMergeCombiningSequence.java:869) [druid-core-0.20.0.jar:0.20.0] at org.apache.druid.java.util.common.guava.ParallelMergeCombiningSequence$SequenceBatcher.block(ParallelMergeCombiningSequence.java:920) [druid-core-0.20.0.jar:0.20.0] at java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3313) [?:1.8.0_121] at org.apache.druid.java.util.common.guava.ParallelMergeCombiningSequence$SequenceBatcher.getBatchYielder(ParallelMergeCombiningSequence.java:909) [druid-core-0.20.0.jar:0.20.0] at org.apache.druid.java.util.common.guava.ParallelMergeCombiningSequence$YielderBatchedResultsCursor.initialize(ParallelMergeCombiningSequence.java:1017) [druid-core-0.20.0.jar:0.20.0] at org.apache.druid.java.util.common.guava.ParallelMergeCombiningSequence$PrepareMergeCombineInputsAction.compute(ParallelMergeCombiningSequence.java:721) [druid-core-0.20.0.jar:0.20.0] at java.util.concurrent.RecursiveAction.exec(RecursiveAction.java:189) [?:1.8.0_121] at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) [?:1.8.0_121] at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056) [?:1.8.0_121] at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692) [?:1.8.0_121] at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157) [?:1.8.0_121]