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From Evaristo José Camarero <evaristo.camar...@yahoo.es>
Subject Re: ConnectionLossException logs a lot on retry
Date Wed, 15 Jan 2014 07:49:12 GMT
Hi there,

I have seen this behaviour in Curator 2.3.0 when ZK ensemble is down and at least this was
not happening with Curator 2.1.0. I am not really sure if this is software bug.

Curator relies on slf4j , so the logging configuration can be tune in the config file of the
logging framwework you are  using.

If you are using log4j and example is using the following line:
log4j.logger.org.apache.curator = FATAL

but then you will miss all the ERROR information
You can also use finer grane using:

log4.logger.o.a.c.f.imps.CuratorFrameworkImpl = FATAL


Regards,

Evaristo




El Martes 14 de enero de 2014 16:20, Henrik Nordvik <henrikno@gmail.com> escribió:
 
Hi,
I've hit an issue where I get an error message way too often. This
message repeats about 10 times every millisecond, which fills our
disks with logs.
This happened when zookeeper went down.

2014-01-14 00:00:04,464 ERROR [mework-0-EventThread]
o.a.c.f.imps.CuratorFrameworkImpl         - Background operation retry
gave up
org.apache.zookeeper.KeeperException$ConnectionLossException:
KeeperErrorCode = ConnectionLoss
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
~[zookeeper-3.4.5.jar:3.4.5-1392090]
        at org.apache.curator.framework.imps.CuratorFrameworkImpl.checkBackgroundRetry(CuratorFrameworkImpl.java:583)
[curator-framework-2.3.0.jar:na]
        at org.apache.curator.framework.imps.CuratorFrameworkImpl.processBackgroundOperation(CuratorFrameworkImpl.java:478)
[curator-framework-2.3.0.jar:na]
        at org.apache.curator.framework.imps.DeleteBuilderImpl$2.processResult(DeleteBuilderImpl.java:161)
[curator-framework-2.3.0.jar:na]
        at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:606)
[zookeeper-3.4.5.jar:3.4.5-1392090]
        at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:495)
[zookeeper-3.4.5.jar:3.4.5-1392090]
2014-01-14 00:00:04,464 ERROR [mework-0-EventThread]
o.a.c.f.imps.CuratorFrameworkImpl         - Background operation retry
gave up
org.apache.zookeeper.KeeperException$ConnectionLossException:
KeeperErrorCode = ConnectionLoss
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
~[zookeeper-3.4.5.jar:3.4.5-1392090]
        at org.apache.curator.framework.imps.CuratorFrameworkImpl.checkBackgroundRetry(CuratorFrameworkImpl.java:583)
[curator-framework-2.3.0.jar:na]
        at org.apache.curator.framework.imps.CuratorFrameworkImpl.processBackgroundOperation(CuratorFrameworkImpl.java:478)
[curator-framework-2.3.0.jar:na]
        at org.apache.curator.framework.imps.DeleteBuilderImpl$2.processResult(DeleteBuilderImpl.java:161)
[curator-framework-2.3.0.jar:na]
        at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:606)
[zookeeper-3.4.5.jar:3.4.5-1392090]
        at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:495)
[zookeeper-3.4.5.jar:3.4.5-1392090]
2014-01-14 00:00:04,465 ERROR [mework-0-EventThread]
o.a.c.f.imps.CuratorFrameworkImpl         - Background operation retry
gave up
org.apache.zookeeper.KeeperException$ConnectionLossException:
KeeperErrorCode = ConnectionLoss
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
~[zookeeper-3.4.5.jar:3.4.5-1392090]
        at org.apache.curator.framework.imps.CuratorFrameworkImpl.checkBackgroundRetry(CuratorFrameworkImpl.java:583)
[curator-framework-2.3.0.jar:na]
        at org.apache.curator.framework.imps.CuratorFrameworkImpl.processBackgroundOperation(CuratorFrameworkImpl.java:478)
[curator-framework-2.3.0.jar:na]
        at org.apache.curator.framework.imps.DeleteBuilderImpl$2.processResult(DeleteBuilderImpl.java:161)
[curator-framework-2.3.0.jar:na]
        at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:606)
[zookeeper-3.4.5.jar:3.4.5-1392090]
        at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:495)
[zookeeper-3.4.5.jar:3.4.5-1392090]

Is this an issue with zookeeper or curator?
How can I configure this so that it's not logging extreme amounts?

--
Henrik Nordvik
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