C client (via zkpython) returns unknown state
Using zkpython with ZK 3.2.1 release: import zookeeper as z zh = z.init(...) z.state(zh) # returns 3 == z.CONNECTED_STATE # kill standalone ZK server z.state(zh) # returns 0 == ??? The problem is that 0 is not a state defined by zookeeper.[ch]. I'm not sure whether 0 should've been defined or z.state should've returned something else. Steven
RE: C client (via zkpython) returns unknown state
Java's KeeperState.Disconnected is 0, so probably that's what the C client should have. This brings up another question: Is the C client supposed to be in sync with the Java client? I notice that there are multiple differences between C's ZOO_*_STATE and Java's KeeperState. -Original Message- From: Patrick Hunt [mailto:ph...@apache.org] Sent: Tuesday, October 13, 2009 5:03 PM To: zookeeper-user@hadoop.apache.org Subject: Re: C client (via zkpython) returns unknown state You're right, 0 should be something like INITIALIZING_STATE but it's not in zookeeper.h zookeeper_init(...) docs: * This method creates a new handle and a zookeeper session that corresponds * to that handle. Session establishment is asynchronous, meaning that the * session should not be considered established until (and unless) an * event of state ZOO_CONNECTED_STATE is received. Please enter a JIRA for this and we'll address it in the next release: https://issues.apache.org/jira/browse/ZOOKEEPER Thanks for the report! Patrick Steven Wong wrote: Using zkpython with ZK 3.2.1 release: import zookeeper as z zh = z.init(...) z.state(zh) # returns 3 == z.CONNECTED_STATE # kill standalone ZK server z.state(zh) # returns 0 == ??? The problem is that 0 is not a state defined by zookeeper.[ch]. I'm not sure whether 0 should've been defined or z.state should've returned something else. Steven
UnsupportedClassVersionError when building zkpython
Any idea how I can get it to build? ZooKeeper 3.2.1 (tarball release) on Mac OS X 10.5.8. Thanks. sw...@lgmac-swong:~/lib/zookeeper/src/contrib/zkpython 9173 sudo ant install Buildfile: build.xml BUILD FAILED java.lang.UnsupportedClassVersionError: Bad version number in .class file at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:675) at org.apache.tools.ant.AntClassLoader.defineClassFromData(AntClassLoader.j ava:1146) at org.apache.tools.ant.AntClassLoader.getClassFromStream(AntClassLoader.ja va:1324) at org.apache.tools.ant.AntClassLoader.findClassInComponents(AntClassLoader .java:1388) at org.apache.tools.ant.AntClassLoader.findClass(AntClassLoader.java:1341) at org.apache.tools.ant.AntClassLoader.loadClass(AntClassLoader.java:1088) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at org.apache.tools.ant.taskdefs.Available.checkClass(Available.java:446) at org.apache.tools.ant.taskdefs.Available.eval(Available.java:273) at org.apache.tools.ant.taskdefs.Available.execute(Available.java:225) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288) at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor Impl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:1 06) at org.apache.tools.ant.Task.perform(Task.java:348) at org.apache.tools.ant.Target.execute(Target.java:357) at org.apache.tools.ant.helper.ProjectHelper2.parse(ProjectHelper2.java:142 ) at org.apache.tools.ant.ProjectHelper.configureProject(ProjectHelper.java:9 3) at org.apache.tools.ant.Main.runBuild(Main.java:743) at org.apache.tools.ant.Main.startAnt(Main.java:217) at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257) at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104) Total time: 0 seconds sw...@lgmac-swong:~/lib/zookeeper/src/contrib/zkpython 9178 sudo javac -version javac 1.6.0_07
RE: UnsupportedClassVersionError when building zkpython
Thanks for the suggestions, guys. The build succeeded by doing either: ant compile sudo python src/python/setup.py install or: sudo env JAVA_HOME=$JAVA_HOME ant install as JAVA_HOME is set (to 1.6) under my account but not set under sudo. I don't know why JAVA_HOME is required, when default Java is 1.6 (sudo javac -version returns 1.6). ant is 1.7.1. Steven -Original Message- From: Patrick Hunt [mailto:ph...@apache.org] Sent: Monday, October 12, 2009 9:33 PM To: zookeeper-user@hadoop.apache.org Subject: Re: UnsupportedClassVersionError when building zkpython I've seen this before. Either you have an old version of ant, or your JAVA_HOME is not set, or it's set incorrectly (to 1.5 and ant is built for 1.6, or vice versa). Patrick Henry Robinson wrote: Hi Steven - I also see that problem if I build on my Mac sometimes. I'm looking into a proper fix, but for now you can do: ant compile sudo python src/python/setup.py install to build and install manually. If you have a moment, can you let me know which ant you are using? (ant -version) Thanks for bringing this up! Henry On Mon, Oct 12, 2009 at 9:06 PM, Steven Wong sw...@netflix.com wrote: Any idea how I can get it to build? ZooKeeper 3.2.1 (tarball release) on Mac OS X 10.5.8. Thanks. sw...@lgmac-swong:~/lib/zookeeper/src/contrib/zkpython 9173 sudo ant install Buildfile: build.xml BUILD FAILED java.lang.UnsupportedClassVersionError: Bad version number in .class file at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:675) at org.apache.tools.ant.AntClassLoader.defineClassFromData(AntClassLoader.j ava:1146) at org.apache.tools.ant.AntClassLoader.getClassFromStream(AntClassLoader.ja va:1324) at org.apache.tools.ant.AntClassLoader.findClassInComponents(AntClassLoader .java:1388) at org.apache.tools.ant.AntClassLoader.findClass(AntClassLoader.java:1341) at org.apache.tools.ant.AntClassLoader.loadClass(AntClassLoader.java:1088) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at org.apache.tools.ant.taskdefs.Available.checkClass(Available.java:446) at org.apache.tools.ant.taskdefs.Available.eval(Available.java:273) at org.apache.tools.ant.taskdefs.Available.execute(Available.java:225) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288) at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor Impl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:1 06) at org.apache.tools.ant.Task.perform(Task.java:348) at org.apache.tools.ant.Target.execute(Target.java:357) at org.apache.tools.ant.helper.ProjectHelper2.parse(ProjectHelper2.java:142 ) at org.apache.tools.ant.ProjectHelper.configureProject(ProjectHelper.java:9 3) at org.apache.tools.ant.Main.runBuild(Main.java:743) at org.apache.tools.ant.Main.startAnt(Main.java:217) at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257) at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104) Total time: 0 seconds sw...@lgmac-swong:~/lib/zookeeper/src/contrib/zkpython 9178 sudo javac -version javac 1.6.0_07
