Unable to send PING command over channel: [id: 0xcffcc397, L:/10.16.18.65:57542 ! R:/10.18.8.156:6380]

[dhlsoft]

[order-center:10.16.18.65:7003]>>2020-12-07 20:32:31.073>>ERROR>>18357>>[redisson-timer-4-1]>>org.redisson.client.handler.PingConnectionHandler$1:89 -> Unable to send PING command over channel: [id: 0x09d44210, L:/10.16.18.65:57558 ! R:/10.18.8.156:6380]

io.netty.channel.StacklessClosedChannelException: null
at io.netty.channel.AbstractChannel$AbstractUnsafe.write(Object, ChannelPromise)(Unknown Source)

[order-center:10.16.18.65:7003]>>2020-12-07 20:32:31.073>>ERROR>>18357>>[redisson-timer-4-1]>>org.redisson.client.handler.PingConnectionHandler$1:89 -> Unable to send PING command over channel: [id: 0x1747256d, L:/10.16.18.65:57526 ! R:/10.18.8.156:6380]

io.netty.channel.StacklessClosedChannelException: null
at io.netty.channel.AbstractChannel$AbstractUnsafe.write(Object, ChannelPromise)(Unknown Source)

[order-center:10.16.18.65:7003]>>2020-12-07 20:32:31.073>>ERROR>>18357>>[redisson-timer-4-1]>>org.redisson.client.handler.PingConnectionHandler$1:89 -> Unable to send PING command over channel: [id: 0x35b04a5a, L:/10.16.18.65:57540 ! R:/10.18.8.156:6380]

io.netty.channel.StacklessClosedChannelException: null
at io.netty.channel.AbstractChannel$AbstractUnsafe.write(Object, ChannelPromise)(Unknown Source)

[dhlsoft]

using 3.14.0

[mrniko]

StacklessClosedChannelException - channel is closed

[dhlsoft]

StacklessClosedChannelException - channel is closed

How to avoid this problem ? pingConnectionInterval: 0？

pingConnectionInterval=0
org.redisson.client.RedisTimeoutException: Command execution timeout for command: (CLUSTER NODES), params: [], Redis client: [addr=redis://10.18.8.157:6380]

[pouyakhoshkhoo]

I've got the same problem. Changing pingConnectionInterval to 10 seconds will resolve the error. I wonder why this error happens in the first place.

[danielgatis-mb]

Same here using 3.14.1. Why this error happens? The default timeout already is 30s.

    /**
     * Defines PING command sending interval per connection to Redis.
     * <code>0</code> means disable.
     * <p>
     * Default is <code>30000</code>
     * 
     * @param pingConnectionInterval - time in milliseconds
     * @return config
     */
    public T setPingConnectionInterval(int pingConnectionInterval) {
        this.pingConnectionInterval = pingConnectionInterval;
        return (T) this;
    }

[mrniko]

@danielgatis-mb

Changing pingConnectionInterval to 10 seconds will resolve the error

Did you try to set it to 10 ?

[wedtlcy]

一定要将其设置为 10 ？我设置15还是有这个错

[zhengquan45]

Why set it 10 seconds，can work？

[shiranyosef1]

pingConnectionInterval already set for me to 1000, why is it still happening? @mrniko

[mrniko]

@shiranyosef1

the root cause is StacklessClosedChannelException - channel is closed. You need to check your network.

[shiranyosef1]

@mrniko The network seems ok, we are working with AWS Elasticache. Is that common?
how would you suggest debugging this?

[mrniko]

@shiranyosef1

try to reduce connections amount.