Ajith S created HADOOP-16159:
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Summary: Deadlock when using FsUrlStreamHandlerFactory
Key: HADOOP-16159
URL: https://issues.apache.org/jira/browse/HADOOP-16159
Project: Hadoop Common
Issue Type: Bug
Affects Versions: 3.1.2, 2.8.5
Reporter: Ajith S
URL.setURLStreamHandlerFactory(new FsUrlStreamHandlerFactory())
This induces the thread lock
Thread 1 : Does load class which will do below
- waiting to lock <0x00000005c0c1e5e0> (a org.apache.hadoop.conf.Configuration)
at
org.apache.hadoop.conf.Configuration.handleDeprecation(Configuration.java:684)
at org.apache.hadoop.conf.Configuration.get(Configuration.java:1088)
at org.apache.hadoop.conf.Configuration.getTrimmed(Configuration.java:1145)
at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2363)
at org.apache.hadoop.fs.FileSystem.getFileSystemClass(FileSystem.java:2840)
at
org.apache.hadoop.fs.FsUrlStreamHandlerFactory.createURLStreamHandler(FsUrlStreamHandlerFactory.java:74)
at java.net.URL.getURLStreamHandler(URL.java:1142)
at java.net.URL.<init>(URL.java:420)
at sun.misc.URLClassPath$JarLoader.<init>(URLClassPath.java:812)
at sun.misc.URLClassPath$JarLoader$3.run(URLClassPath.java:1094)
at sun.misc.URLClassPath$JarLoader$3.run(URLClassPath.java:1091)
at java.security.AccessController.doPrivileged(Native Method)
at sun.misc.URLClassPath$JarLoader.getResource(URLClassPath.java:1090)
at sun.misc.URLClassPath$JarLoader.getResource(URLClassPath.java:1050)
at sun.misc.URLClassPath.getResource(URLClassPath.java:239)
at java.net.URLClassLoader$1.run(URLClassLoader.java:365)
at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
- locked <0x00000005b7991168> (a org.apache.spark.util.MutableURLClassLoader)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
Thread 2 : Create new URL
- waiting to lock <0x00000005b7991168> (a
org.apache.spark.util.MutableURLClassLoader)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at org.apache.xerces.parsers.ObjectFactory.findProviderClass(Unknown Source)
at org.apache.xerces.parsers.ObjectFactory.newInstance(Unknown Source)
at org.apache.xerces.parsers.ObjectFactory.createObject(Unknown Source)
at org.apache.xerces.parsers.ObjectFactory.createObject(Unknown Source)
at org.apache.xerces.parsers.DOMParser.<init>(Unknown Source)
at org.apache.xerces.parsers.DOMParser.<init>(Unknown Source)
at org.apache.xerces.jaxp.DocumentBuilderImpl.<init>(Unknown Source)
at org.apache.xerces.jaxp.DocumentBuilderFactoryImpl.newDocumentBuilder(Unknown
Source)
at org.apache.hadoop.conf.Configuration.loadResource(Configuration.java:2737)
at org.apache.hadoop.conf.Configuration.loadResources(Configuration.java:2696)
at org.apache.hadoop.conf.Configuration.getProps(Configuration.java:2579)
- locked <0x00000005c0c1e5e0> (a org.apache.hadoop.conf.Configuration)
at org.apache.hadoop.conf.Configuration.get(Configuration.java:1091)
at org.apache.hadoop.conf.Configuration.getTrimmed(Configuration.java:1145)
at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2363)
at org.apache.hadoop.fs.FileSystem.getFileSystemClass(FileSystem.java:2840)
at
org.apache.hadoop.fs.FsUrlStreamHandlerFactory.createURLStreamHandler(FsUrlStreamHandlerFactory.java:74)
at java.net.URL.getURLStreamHandler(URL.java:1142)
at java.net.URL.<init>(URL.java:599)
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