You are viewing a plain text version of this content. The canonical link for it is here.
Posted to solr-user@lucene.apache.org by Jeevanandam Madanagopal <je...@myjeeva.com> on 2012/10/18 15:01:45 UTC
KeeperException (NodeExists for /overseer): SolrCloud Multiple Collections - is it safe ignore these exceptions?
Hello -
While doing prototype of SolrCloud with Multiple Collection. Each collection represents country level data.
- searching within collection represents country level - local search
- searching across collection represents global search
Attached the graph image of SolrCoud structure. For prototype I'm running Embedded ZooKeeper ensemble (5 replicated zookeeper servers).
- Searching and Indexing in respective collection works well
- Search across collection works well (for global search)
While joining the 'Collection2' to zookeeper ensemble I noticed the following KeeperException in the logger.
Question 'is it safe to ignore these exceptions?'
Exception Log snippet:
Oct 18, 2012 4:54:26 PM org.apache.zookeeper.server.NIOServerCnxn$Factory run
INFO: Accepted socket connection from /fe80:0:0:0:0:0:0:1%1:62700
Oct 18, 2012 4:54:26 PM org.apache.zookeeper.server.NIOServerCnxn readConnectRequest
INFO: Client attempting to establish new session at /fe80:0:0:0:0:0:0:1%1:62700
Oct 18, 2012 4:54:26 PM org.apache.zookeeper.server.NIOServerCnxn finishSessionInit
INFO: Established session 0x13a73521356000a with negotiated timeout 15000 for client /fe80:0:0:0:0:0:0:1%1:62700
Oct 18, 2012 4:54:26 PM org.apache.zookeeper.server.PrepRequestProcessor pRequest
INFO: Got user-level KeeperException when processing sessionid:0x13a73521356000a type:create cxid:0x1 zxid:0xfffffffffffffffe txntype:unknown reqpath:n/a Error Path:/overseer Error:KeeperErrorCode = NodeExists for /overseer
Oct 18, 2012 4:54:26 PM org.apache.zookeeper.server.PrepRequestProcessor pRequest
INFO: Got user-level KeeperException when processing sessionid:0x13a73521356000a type:create cxid:0x2 zxid:0xfffffffffffffffe txntype:unknown reqpath:n/a Error Path:/overseer Error:KeeperErrorCode = NodeExists for /overseer
Oct 18, 2012 4:54:26 PM org.apache.zookeeper.server.PrepRequestProcessor pRequest
INFO: Got user-level KeeperException when processing sessionid:0x13a73521356000a type:delete cxid:0x4 zxid:0xfffffffffffffffe txntype:unknown reqpath:n/a Error Path:/live_nodes/mac-book-pro.local:7500_solr Error:KeeperErrorCode = NoNode for /live_nodes/mac-book-pro.local:7500_solr
Oct 18, 2012 4:54:26 PM org.apache.solr.common.cloud.ZkStateReader$3 process
INFO: Updating live nodes
Cheers, Jeeva
Re: KeeperException (NodeExists for /overseer): SolrCloud Multiple Collections - is it safe ignore these exceptions?
Posted by Jeevanandam Madanagopal <je...@myjeeva.com>.
Thanks Mark!
Cheers, Jeeva
On Oct 19, 2012, at 8:35 AM, Mark Miller <ma...@gmail.com> wrote:
> Yes, those exceptions are fine. These are cases where we try to delete the node if it's there, but don't care if it's not there - things like that. In some of these cases, ZooKeeper logs things we can't stop, even though it's expected that sometimes we will try and remove nodes that are not there or create nodes that are already there.
>
> - Mark
>
> On Thu, Oct 18, 2012 at 9:01 AM, Jeevanandam Madanagopal <je...@myjeeva.com> wrote:
> Hello -
>
> While doing prototype of SolrCloud with Multiple Collection. Each collection represents country level data.
> - searching within collection represents country level - local search
> - searching across collection represents global search
>
> Attached the graph image of SolrCoud structure. For prototype I'm running Embedded ZooKeeper ensemble (5 replicated zookeeper servers).
> - Searching and Indexing in respective collection works well
> - Search across collection works well (for global search)
>
>
>
>
> While joining the 'Collection2' to zookeeper ensemble I noticed the following KeeperException in the logger.
>
> Question 'is it safe to ignore these exceptions?'
>
> Exception Log snippet:
> Oct 18, 2012 4:54:26 PM org.apache.zookeeper.server.NIOServerCnxn$Factory run
> INFO: Accepted socket connection from /fe80:0:0:0:0:0:0:1%1:62700
> Oct 18, 2012 4:54:26 PM org.apache.zookeeper.server.NIOServerCnxn readConnectRequest
> INFO: Client attempting to establish new session at /fe80:0:0:0:0:0:0:1%1:62700
> Oct 18, 2012 4:54:26 PM org.apache.zookeeper.server.NIOServerCnxn finishSessionInit
> INFO: Established session 0x13a73521356000a with negotiated timeout 15000 for client /fe80:0:0:0:0:0:0:1%1:62700
> Oct 18, 2012 4:54:26 PM org.apache.zookeeper.server.PrepRequestProcessor pRequest
> INFO: Got user-level KeeperException when processing sessionid:0x13a73521356000a type:create cxid:0x1 zxid:0xfffffffffffffffe txntype:unknown reqpath:n/a Error Path:/overseer Error:KeeperErrorCode = NodeExists for /overseer
> Oct 18, 2012 4:54:26 PM org.apache.zookeeper.server.PrepRequestProcessor pRequest
> INFO: Got user-level KeeperException when processing sessionid:0x13a73521356000a type:create cxid:0x2 zxid:0xfffffffffffffffe txntype:unknown reqpath:n/a Error Path:/overseer Error:KeeperErrorCode = NodeExists for /overseer
> Oct 18, 2012 4:54:26 PM org.apache.zookeeper.server.PrepRequestProcessor pRequest
> INFO: Got user-level KeeperException when processing sessionid:0x13a73521356000a type:delete cxid:0x4 zxid:0xfffffffffffffffe txntype:unknown reqpath:n/a Error Path:/live_nodes/mac-book-pro.local:7500_solr Error:KeeperErrorCode = NoNode for /live_nodes/mac-book-pro.local:7500_solr
> Oct 18, 2012 4:54:26 PM org.apache.solr.common.cloud.ZkStateReader$3 process
> INFO: Updating live nodes
>
> Cheers, Jeeva
>
>
>
>
> --
> - Mark
Re: KeeperException (NodeExists for /overseer): SolrCloud Multiple
Collections - is it safe ignore these exceptions?
Posted by Mark Miller <ma...@gmail.com>.
Yes, those exceptions are fine. These are cases where we try to delete the
node if it's there, but don't care if it's not there - things like that. In
some of these cases, ZooKeeper logs things we can't stop, even though it's
expected that sometimes we will try and remove nodes that are not there or
create nodes that are already there.
- Mark
On Thu, Oct 18, 2012 at 9:01 AM, Jeevanandam Madanagopal
<je...@myjeeva.com>wrote:
> *Hello -*
>
> While doing prototype of SolrCloud with Multiple Collection. Each
> collection represents country level data.
> - searching within collection represents country level - local search
> - searching across collection represents global search
>
> Attached the graph image of SolrCoud structure. For prototype I'm running
> Embedded ZooKeeper ensemble (5 replicated zookeeper servers).
> - Searching and Indexing in respective collection works well
> - Search across collection works well (for global search)
>
>
>
> While joining the 'Collection2' to zookeeper ensemble I noticed the
> following KeeperException in the logger.
>
> Question '*is it safe to ignore these exceptions?*'
>
> *Exception Log snippet:*
> Oct 18, 2012 4:54:26 PM org.apache.zookeeper.server.NIOServerCnxn$Factory
> run
> INFO: Accepted socket connection from /fe80:0:0:0:0:0:0:1%1:62700
> Oct 18, 2012 4:54:26 PM org.apache.zookeeper.server.NIOServerCnxn
> readConnectRequest
> INFO: Client attempting to establish new session at
> /fe80:0:0:0:0:0:0:1%1:62700
> Oct 18, 2012 4:54:26 PM org.apache.zookeeper.server.NIOServerCnxn
> finishSessionInit
> INFO: Established session 0x13a73521356000a with negotiated timeout 15000
> for client /fe80:0:0:0:0:0:0:1%1:62700
> Oct 18, 2012 4:54:26 PM org.apache.zookeeper.server.PrepRequestProcessor
> pRequest
> INFO: Got user-level KeeperException when processing
> sessionid:0x13a73521356000a type:create cxid:0x1 zxid:0xfffffffffffffffe
> txntype:unknown reqpath:n/a Error Path:/overseer Error:KeeperErrorCode =
> NodeExists for /overseer
> Oct 18, 2012 4:54:26 PM org.apache.zookeeper.server.PrepRequestProcessor
> pRequest
> INFO: Got user-level KeeperException when processing
> sessionid:0x13a73521356000a type:create cxid:0x2 zxid:0xfffffffffffffffe
> txntype:unknown reqpath:n/a Error Path:/overseer Error:KeeperErrorCode =
> NodeExists for /overseer
> Oct 18, 2012 4:54:26 PM org.apache.zookeeper.server.PrepRequestProcessor
> pRequest
> INFO: Got user-level KeeperException when processing
> sessionid:0x13a73521356000a type:delete cxid:0x4 zxid:0xfffffffffffffffe
> txntype:unknown reqpath:n/a Error
> Path:/live_nodes/mac-book-pro.local:7500_solr Error:KeeperErrorCode =
> NoNode for /live_nodes/mac-book-pro.local:7500_solr
> Oct 18, 2012 4:54:26 PM org.apache.solr.common.cloud.ZkStateReader$3
> process
> INFO: Updating live nodes
>
> *Cheers, Jeeva*
>
>
--
- Mark