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Posted to issues@hbase.apache.org by "Federico Gaule (JIRA)" <ji...@apache.org> on 2013/12/04 13:14:39 UTC
[jira] [Created] (HBASE-10078) Dynamic Filter - Not using
DynamicClassLoader whe using FilterList
Federico Gaule created HBASE-10078:
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Summary: Dynamic Filter - Not using DynamicClassLoader whe using FilterList
Key: HBASE-10078
URL: https://issues.apache.org/jira/browse/HBASE-10078
Project: HBase
Issue Type: Bug
Components: Filters
Affects Versions: 0.94.13
Reporter: Federico Gaule
Priority: Minor
I've tried to use dynamic jar load (https://issues.apache.org/jira/browse/HBASE-1936) but seems to have an issue with FilterList.
Here is some log from my app where i send a Get with a FilterList containing AFilter and other with BFilter.
2013-12-02 13:55:42,564 DEBUG org.apache.hadoop.hbase.util.DynamicClassLoader: Class d.p.AFilter not found - using dynamical class loader
2013-12-02 13:55:42,564 DEBUG org.apache.hadoop.hbase.util.DynamicClassLoader: Finding class: d.p.AFilter
2013-12-02 13:55:42,564 DEBUG org.apache.hadoop.hbase.util.DynamicClassLoader: Loading new jar files, if any
2013-12-02 13:55:42,677 DEBUG org.apache.hadoop.hbase.util.DynamicClassLoader: Finding class again: d.p.AFilter
2013-12-02 13:55:43,004 ERROR org.apache.hadoop.hbase.io.HbaseObjectWritable: Can't find class d.p.BFilter
java.lang.ClassNotFoundException: d.p.BFilter
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:820)
at org.apache.hadoop.hbase.io.HbaseObjectWritable.getClassByName(HbaseObjectWritable.java:792)
at org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:679)
at org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:594)
at org.apache.hadoop.hbase.filter.FilterList.readFields(FilterList.java:324)
at org.apache.hadoop.hbase.client.Get.readFields(Get.java:405)
at org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:690)
at org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:594)
at org.apache.hadoop.hbase.client.Action.readFields(Action.java:101)
at org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:690)
at org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:594)
at org.apache.hadoop.hbase.client.MultiAction.readFields(MultiAction.java:116)
at org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:690)
at org.apache.hadoop.hbase.ipc.Invocation.readFields(Invocation.java:126)
at org.apache.hadoop.hbase.ipc.HBaseServer$Connection.processData(HBaseServer.java:1311)
at org.apache.hadoop.hbase.ipc.HBaseServer$Connection.readAndProcess(HBaseServer.java:1226)
at org.apache.hadoop.hbase.ipc.HBaseServer$Listener.doRead(HBaseServer.java:748)
at org.apache.hadoop.hbase.ipc.HBaseServer$Listener$Reader.doRunLoop(HBaseServer.java:539)
at org.apache.hadoop.hbase.ipc.HBaseServer$Listener$Reader.run(HBaseServer.java:514)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
AFilter is not found so it tries with DynamicClassLoader, but when it tries to load AFilter, it uses URLClassLoader and fails without checking out for dynamic jars.
I think the issue is releated to FilterList#readFields
public void readFields(final DataInput in) throws IOException {
byte opByte = in.readByte();
operator = Operator.values()[opByte];
int size = in.readInt();
if (size > 0) {
filters = new ArrayList<Filter>(size);
for (int i = 0; i < size; i++) {
Filter filter = (Filter)HbaseObjectWritable.readObject(in, conf);
filters.add(filter);
}
}
}
HbaseObjectWritable#readObject uses a conf (created by calling HBaseConfiguration.create()) which i suppose doesn't include a DynamicClassLoader instance.
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