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https://issues.apache.org/jira/browse/HBASE-10078?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jimmy Xiang updated HBASE-10078:
--------------------------------
Attachment: 0.94-10078.patch
> Dynamic Filter - Not using DynamicClassLoader when 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
> Assignee: Jimmy Xiang
> Priority: Minor
> Attachments: 0.94-10078.patch, hbase-10078.patch
>
>
> 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.
> {noformat}
> 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)
> {noformat}
> 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
> {code:title=FilterList.java|borderStyle=solid}
> 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);
> }
> }
> }
> {code}
> HbaseObjectWritable#readObject uses a conf (created by calling
> HBaseConfiguration.create()) which i suppose doesn't include a
> DynamicClassLoader instance.
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