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None of the hadoop services should dump exceptions to logs on simple port checks. If, as a user, I can simply telnet to a port over and over and trash the logs, it's something that needs to be fixed on the service side. The solution here doesn't allow for future alerts to use this type of command. Instead, you should be extending port alerts to specify the socket command to send. ambari-agent/src/main/python/ambari_agent/alerts/port_alert.py (lines 133 - 135) <https://reviews.apache.org/r/48972/#comment204037> We don't hardcode specific workarounds into the alerts framework. It's not maintainable. - Jonathan Hurley On June 20, 2016, 6:29 p.m., Masahiro Tanaka wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > https://reviews.apache.org/r/48972/ > ----------------------------------------------------------- > > (Updated June 20, 2016, 6:29 p.m.) > > > Review request for Ambari, Florian Barca, Jonathan Hurley, and Nate Cole. > > > Bugs: AMBARI-17253 > https://issues.apache.org/jira/browse/AMBARI-17253 > > > Repository: ambari > > > Description > ------- > > There are too many WARNING in ZooKeeper log. > ``` > 2016-06-15 21:02:15,405 - WARN > [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@357] - caught end of > stream exception > EndOfStreamException: Unable to read additional data from client sessionid > 0x0, likely client has closed socket > at > org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:228) > at > org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:208) > at java.lang.Thread.run(Thread.java:745) > ``` > > It may be because of Ambari Alert. Ambari Alert pings to the zookeeper port > to do monitoring. > We should use 'ruok' to monitor zookeepers. > > > Diffs > ----- > > ambari-agent/src/main/python/ambari_agent/alerts/port_alert.py 1918327 > ambari-agent/src/test/python/ambari_agent/TestPortAlert.py dffa56c > > Diff: https://reviews.apache.org/r/48972/diff/ > > > Testing > ------- > > mvn clean test > > ``` > +1 overall. Here are the results of testing the latest attachment > http://issues.apache.org/jira/secure/attachment/12811835/AMBARI-17253.2.patch > against trunk revision . > +1 @author. The patch does not contain any @author tags. > +1 tests included. The patch appears to include 1 new or modified test files. > +1 javac. The applied patch does not increase the total number of javac > compiler warnings. > +1 release audit. The applied patch does not increase the total number of > release audit warnings. > +1 core tests. The patch passed unit tests in . > Test results: > https://builds.apache.org/job/Ambari-trunk-test-patch/7427//testReport/ > Console output: > https://builds.apache.org/job/Ambari-trunk-test-patch/7427//console > This message is automatically generated. > ``` > > > Thanks, > > Masahiro Tanaka > >
