Re: Read exceptions after upgrading to 3.0.10

[kurt greaves]

That stacktrace generally implies your clients are resetting connections.
The reconnection policy probably handles the issue automatically, however
worth investigating. I don't think it normally causes statuslogger output
however, what were the log messages prior to the stacktrace?

On 24 February 2017 at 11:57, Carlos Rolo  wrote:

> By any chances are you using the PHP/C++ driver?
>
> --
>
>
>
>

Re: Read exceptions after upgrading to 3.0.10

[Carlos Rolo]

By any chances are you using the PHP/C++ driver?

-- 


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Read exceptions after upgrading to 3.0.10

[Meg Mara]

Hello,

We have a 6 node cluster which was recently upgraded from 2.2.5 to 3.0.10. 
Since then, we have been facing a lot of these exceptions. What could be the 
possible cause for this exception?

INFO  [SharedPool-Worker-2] 2017-02-23 20:14:04,984 Message.java:611 - 
Unexpected exception during request; channel = [id: 0x034e0914, 
/xx.xx.117.34:19836 :> /xx.xx.9.119:9042]
java.io.IOException: Error while read(...): Connection reset by peer
  at io.netty.channel.epoll.Native.readAddress(Native Method) 
~[netty-all-4.0.23.Final.jar:4.0.23.Final]
  at 
io.netty.channel.epoll.EpollSocketChannel$EpollSocketUnsafe.doReadBytes(EpollSocketChannel.java:675)
 ~[netty-all-4.0.23.Final.jar:4.0.23.Final]
  at 
io.netty.channel.epoll.EpollSocketChannel$EpollSocketUnsafe.epollInReady(EpollSocketChannel.java:714)
 ~[netty-all-4.0.23.Final.jar:4.0.23.Final]
  at 
io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:326) 
~[netty-all-4.0.23.Final.jar:4.0.23.Final]
  at 
io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:264) 
~[netty-all-4.0.23.Final.jar:4.0.23.Final]
  at 
io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
 ~[netty-all-4.0.23.Final.jar:4.0.23.Final]
  at 
io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)
 ~[netty-all-4.0.23.Final.jar:4.0.23.Final]
  at java.lang.Thread.run(Thread.java:745) [na:1.8.0_101]

INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,330 StatusLogger.java:52 - Pool 
NameActive   Pending  Completed   Blocked  All Time 
Blocked
INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,340 StatusLogger.java:56 - 
MutationStage 0 0  88103 0  
   0
INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,340 StatusLogger.java:56 - 
ViewMutationStage 0 0  0 0  
   0
INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,340 StatusLogger.java:56 - 
ReadStage 0 0 155903 0  
   0
INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,340 StatusLogger.java:56 - 
RequestResponseStage  0 0 188450 0  
   0
INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,341 StatusLogger.java:56 - 
ReadRepairStage   0 0   4118 0  
   0
INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,341 StatusLogger.java:56 - 
CounterMutationStage  0 0  0 0  
   0
INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,341 StatusLogger.java:56 - 
MiscStage 0 0  0 0  
   0
INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,341 StatusLogger.java:56 - 
CompactionExecutor0 0  20443 0  
   0
INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,342 StatusLogger.java:56 - 
MemtableReclaimMemory 0 0 52 0  
   0
INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,342 StatusLogger.java:56 - 
PendingRangeCalculator0 0  8 0  
   0
INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,342 StatusLogger.java:56 - 
GossipStage   0 0  21308 0  
   0
INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,345 StatusLogger.java:56 - 
Native-Transport-Requests 0 0 155489 0  
   4

INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,346 StatusLogger.java:103 - Table  
 Memtable ops,data
INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,346 StatusLogger.java:106 - look   
300,21900
INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,346 StatusLogger.java:106 - 
segment   8,336
INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,347 StatusLogger.java:106 - 
sys_spend 13,5678
INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,347 StatusLogger.java:106 - list   
  0,0
INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,347 StatusLogger.java:106 - 
a_count   14,392
INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,347 StatusLogger.java:106 - 
r_count   618,79787
INFO  [ScheduledTasks:1] 2017-02-23 20:13:12,347 StatusLogger.java:106 - 
sys_prd 642,1393965

Thank you in advance,
Meghana Mara