Christopher Tubbs created ZOOKEEPER-3737:
--------------------------------------------
Summary: Unable to eliminate log4j1 transitive dependency
Key: ZOOKEEPER-3737
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3737
Project: ZooKeeper
Issue Type: Bug
Components: jmx, server
Affects Versions: 3.5.7, 3.4.14
Reporter: Christopher Tubbs
Apache Accumulo is trying to switch to using log4j2 only. However, this seems
impossible, because ZooKeeper has a hard-coded dependency on log4j 1.2 for some
sort of jmx thing. The following is the error and stack trace I get whenever I
remove log4j 1.2 from the class path and try to run a test instance of
ZooKeeper as part of Accumulo's build test suite.
{code}
2020-02-24T20:10:03,682 [jmx.ManagedUtil] ERROR: Problems while registering
log4j jmx beans!
java.lang.ClassNotFoundException: org.apache.log4j.jmx.HierarchyDynamicMBean
at
jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
~[?:?]
at
jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
~[?:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:521) ~[?:?]
at java.lang.Class.forName0(Native Method) ~[?:?]
at java.lang.Class.forName(Class.java:315) ~[?:?]
at
org.apache.zookeeper.jmx.ManagedUtil.registerLog4jMBeans(ManagedUtil.java:72)
~[zookeeper-3.5.7.jar:3.5.7]
at
org.apache.zookeeper.server.ZooKeeperServerMain.initializeAndRun(ZooKeeperServerMain.java:94)
~[zookeeper-3.5.7.jar:3.5.7]
at
org.apache.zookeeper.server.ZooKeeperServerMain.main(ZooKeeperServerMain.java:64)
~[zookeeper-3.5.7.jar:3.5.7]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
~[?:?]
at
jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
~[?:?]
at
jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
~[?:?]
at java.lang.reflect.Method.invoke(Method.java:566) ~[?:?]
at org.apache.accumulo.start.Main.lambda$execMainClass$1(Main.java:167)
~[accumulo-start-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at java.lang.Thread.run(Thread.java:834) [?:?]
{code}
I know previous work has been done on ZOOKEEPER-850 and ZOOKEEPER-1371 to
eliminate the use of log4j in the source, but this work does not appear to be
complete, since it is still required at runtime (at least, for the server...
but maybe for the client too... it's hard to tell from the way Accumulo runs
its test suite, and I'm not super familiar with ZK internals).
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