I'm always using a small Java program to delete the nodes directly. I assume you can also delete the whole node but that is nothing I have tried myself.

On 22.08.2017 14:27, Jeff Courtade wrote:
So ...

Using the zkCli.sh i have the jute.maxbuffer setup so I can list it now.

Can I

  rmr /overseer/queue

Or do i need to delete individual entries?

Will

rmr /overseer/queue/*

work?




Jeff Courtade
M: 240.507.6116

On Aug 22, 2017 8:20 AM, "Hendrik Haddorp" <hendrik.hadd...@gmx.net> wrote:

When Solr is stopped it did not cause a problem so far.
I cleared the queue also a few times while Solr was still running. That
also didn't result in a real problem but some replicas might not come up
again. In those case it helps to either restart the node with the replicas
that are in state "down" or to remove the failed replica and then recreate
it. But as said, clearing it when Solr is stopped worked fine so far.

On 22.08.2017 14:03, Jeff Courtade wrote:

How does the cluster react to the overseer q entries disapeering?



Jeff Courtade
M: 240.507.6116

On Aug 22, 2017 8:01 AM, "Hendrik Haddorp" <hendrik.hadd...@gmx.net>
wrote:

Hi Jeff,
we ran into that a few times already. We have lots of collections and
when
nodes get started too fast the overseer queue grows faster then Solr can
process it. At some point Solr tries to redo things like leaders votes
and
adds new tasks to the list, which then gets longer and longer. Once it is
too long you can not read out the data anymore but Solr is still adding
tasks. In case you already reached that point you have to start ZooKeeper
and the ZooKeeper client with and increased "jute.maxbuffer" value. I
usually double it until I can read out the queue again. After that I
delete
all entries in the queue and then start the Solr nodes one by one, like
every 5 minutes.

regards,
Hendrik

On 22.08.2017 13:42, Jeff Courtade wrote:

Hi,
I have an issue with what seems to be a blocked up /overseer/queue

There are 700k + entries.

Solr cloud 6.x

You cannot addreplica or deletereplica the commands time out.

Full stop and start of solr and zookeeper does not clear it.

Is it safe to use the zookeeper supplied zkCli.sh to simple rmr the
/overseer/queue ?


Jeff Courtade
M: 240.507.6116




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