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From Riccardo Ferrari <ferra...@gmail.com>
Subject Re: NoHostAvailableException coming up on our server
Date Tue, 12 Jul 2016 21:37:04 GMT
What driver version are you using?

You can look at the LoggingRetryPolicy to have more meaningful messages in
your logs.

best,

On Tue, Jul 12, 2016 at 9:02 PM, Abhinav Solan <abhinav.solan@gmail.com>
wrote:

> Thanks, Johnny
> Actually, they were running .. it went through a series of read and writes
> .. and recovered after the error.
> Is there any settings I can specify in preparing the Session at java
> client driver level, here are my current settings -
>
> PoolingOptions poolingOptions = new PoolingOptions()
>          .setConnectionsPerHost(HostDistance.LOCAL, 20, 20)
>          .setMaxRequestsPerConnection(HostDistance.LOCAL, 128)
>          .setNewConnectionThreshold(HostDistance.LOCAL, 100);
>
>  Cluster.Builder builder = Cluster.builder()
>          .addContactPoints(cp)
>          .withPoolingOptions(poolingOptions)
>          .withProtocolVersion(ProtocolVersion.NEWEST_SUPPORTED)
>          .withPort(port);
>
>
>
> On Tue, Jul 12, 2016 at 11:47 AM Johnny Miller <johnny.p.miller@gmail.com>
> wrote:
>
>> Abhinav - your getting that as the driver isn’t finding any hosts up for
>> your query. You probably need to check if all the nodes in your cluster are
>> running.
>>
>> See:
>> http://docs.datastax.com/en/drivers/java/3.0/com/datastax/driver/core/exceptions/NoHostAvailableException.html
>>
>>
>> Johnny
>>
>> On 12 Jul 2016, at 18:46, Abhinav Solan <abhinav.solan@gmail.com> wrote:
>>
>> Hi Everyone,
>>
>> I am getting this error on our server, it comes and goes seems the
>> connection drops a comes back after a while -
>>
>> Caused by: com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s)
tried for query failed (tried: ****************:9042 (com.datastax.driver.core.exceptions.ConnectionException:
[****************] Pool is CLOSING))
>> 	at com.datastax.driver.core.RequestHandler.reportNoMoreHosts(RequestHandler.java:218)
>> 	at com.datastax.driver.core.RequestHandler.access$1000(RequestHandler.java:43)
>> 	at com.datastax.driver.core.RequestHandler$SpeculativeExecution.sendRequest(RequestHandler.java:284)
>> 	at com.datastax.driver.core.RequestHandler.startNewExecution(RequestHandler.java:115)
>> 	at com.datastax.driver.core.RequestHandler.sendRequest(RequestHandler.java:91)
>> 	at com.datastax.driver.core.SessionManager.executeAsync(SessionManager.java:129)
>>
>> Can anyone suggest me what can be done to handle this error ?
>>
>>
>> Thanks,
>>
>> Abhinav
>>
>>
>>

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