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From <SEAN_R_DUR...@homedepot.com>
Subject RE: "Not enough replicas available for query" after reboot
Date Thu, 04 Feb 2016 21:54:02 GMT
What client are you using?

It is possible that the client saw nodes down and has kept them marked that way (without retrying).
Depending on the client, you may have options to set in RetryPolicy, FailoverPolicy, etc.
A bounce of the client will probably fix the problem for now.


Sean Durity

From: Flavien Charlon [mailto:flavien.charlon@gmail.com]
Sent: Thursday, February 04, 2016 4:06 PM
To: user@cassandra.apache.org
Subject: Re: "Not enough replicas available for query" after reboot

Yes, all three nodes see all three nodes as UN.

Also, connecting from a local Cassandra machine using cqlsh, I can run the same query just
fine (with QUORUM consistency level).

On 4 February 2016 at 21:02, Robert Coli <rcoli@eventbrite.com<mailto:rcoli@eventbrite.com>>
wrote:
On Thu, Feb 4, 2016 at 12:53 PM, Flavien Charlon <flavien.charlon@gmail.com<mailto:flavien.charlon@gmail.com>>
wrote:
My cluster was running fine. I rebooted all three nodes (one by one), and now all nodes are
back up and running. "nodetool status" shows UP for all three nodes on all three nodes:

--  Address        Load       Tokens  Owns    Host ID                               Rack
UN  xx.xx.xx.xx    331.84 GB  1       ?       d3d3a79b-9ca5-43f9-88c4-c3c7f08ca538  RAC1
UN  xx.xx.xx.xx    317.2 GB   1       ?       de7917ed-0de9-434d-be88-bc91eb4f8713  RAC1
UN  xx.xx.xx.xx  291.61 GB  1       ?       b489c970-68db-44a7-90c6-be734b41475f  RAC1

However, now the client application fails to run queries on the cluster with:

Cassandra.UnavailableException: Not enough replicas available for query at consistency Quorum
(2 required but only 1 alive)

Do *all* nodes see each other as UP/UN?

=Rob



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