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Lettuce Throwing java.lang.IndexOutOfBoundsException.

See original GitHub issue

Hello,

We are finding that some of our lettuce client hosts start spontaneously throwing the following exception:

Caused by: com.lambdaworks.redis.RedisException: java.lang.IndexOutOfBoundsException: Index: 1, Size: 1
    at com.lambdaworks.redis.cluster.MultiNodeExecution.execute(MultiNodeExecution.java:31)
    at com.lambdaworks.redis.cluster.RedisAdvancedClusterAsyncCommandsImpl.lambda$mget$1(RedisAdvancedClusterAsyncCommandsImpl.java:118)
    at com.lambdaworks.redis.cluster.PipelinedRedisFuture.lambda$new$0(PipelinedRedisFuture.java:24)
    at com.lambdaworks.redis.protocol.AsyncCommand.completeResult(AsyncCommand.java:88)
    at com.lambdaworks.redis.protocol.AsyncCommand.complete(AsyncCommand.java:76)
    at com.lambdaworks.redis.protocol.CommandWrapper.complete(CommandWrapper.java:30)
    at com.lambdaworks.redis.cluster.ClusterCommand.complete(ClusterCommand.java:44)
    at com.lambdaworks.redis.protocol.CommandHandler.decode(CommandHandler.java:170)
    at com.lambdaworks.redis.protocol.CommandHandler.channelRead(CommandHandler.java:141)
    at com.lambdaworks.redis.cluster.RedisAdvancedClusterAsyncCommandsImpl.lambda$null$0(RedisAdvancedClusterAsyncCommandsImpl.java:118)
    at com.lambdaworks.redis.cluster.MultiNodeExecution.execute(MultiNodeExecution.java:29)

Some of the host continue to throw this exception until they are restarted, while others will heal on their own.

We do not see anything interesting in the DEBUG logs leading up to these exceptions; no disconnects or errors, just the expected output leading to the exception such as:

15 Mar 2018 11:30:30,413 [DEBUG] {} (lettuce-nioEventLoop-3-7) com.lambdaworks.redis.protocol.RedisStateMachine: Decoded ClusterCommand [command=AsyncCommand [type=MGET, output=ValueListOutput [output=[null], error='null'], commandType=com.lambdaworks.redis.protocol.Command], executions=0], empty stack: true
15 Mar 2018 11:30:30,413 [DEBUG] {} (lettuce-nioEventLoop-3-3) com.lambdaworks.redis.protocol.RedisStateMachine: Decode ClusterCommand [command=AsyncCommand [type=MGET, output=ValueListOutput [output=[], error='null'], commandType=com.lambdaworks.redis.protocol.Command], executions=0]
15 Mar 2018 11:30:30,413 [DEBUG] {} (lettuce-nioEventLoop-3-3) com.lambdaworks.redis.protocol.RedisStateMachine: Decoded ClusterCommand [command=AsyncCommand [type=MGET, output=ValueListOutput [output=[null], error='null'], commandType=com.lambdaworks.redis.protocol.Command], executions=0], empty stack: true

Our environment: Lettuce 4.1.1.Final Redis 3.2

Link to code where exception is thrown.

Issue Analytics

State:
Created 6 years ago
Comments:20 (10 by maintainers)

Top GitHub Comments

1reaction

HarryTheHawkcommented, Mar 19, 2018

We are in the process of migrating to 4.4.3 - just conducting some final testing.

0reactions

mp911decommented, Apr 17, 2018

Closing this one as it seems we cannot do anything further here. Feel free to reopen the ticket once there is something we can do.

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