nickwallen commented on a change in pull request #1506: METRON-2188 Upgrade to
HBase 2.0.2
URL: https://github.com/apache/metron/pull/1506#discussion_r323240960
##########
File path: metron-platform/metron-hbase-server/pom.xml
##########
@@ -278,6 +282,7 @@
<exclude>org/slf4j/**</exclude>
<exclude>META-INF/maven/org.slf4j/**</exclude>
<exclude>META-INF/license/LICENSE.slf4j.txt</exclude>
+ <exclude>org/apache/hadoop/**</exclude>
Review comment:
Without these changes to `metron-hbase-server/pom.xml`, the coprocessor
prevents the region server from being started. The following exception is
thrown in the HBase server logs.
```
***** ABORTING region server node1,16020,1568142532355: The coprocessor
org.apache.metron.hbase.coprocessor.EnrichmentCoprocessor threw
java.lang.LinkageError: loader constraint violation: loader (instance of
org/apache/hadoop/hbase/util/CoprocessorClassLoader) previously initiated
loading for a different type with name "org/apache/hadoop/conf/Configuration"
*****
Cause:
java.lang.LinkageError: loader constraint violation: loader (instance of
org/apache/hadoop/hbase/util/CoprocessorClassLoader) previously initiated
loading for a different type with name "org/apache/hadoop/conf/Configuration"
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
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
org.apache.hadoop.hbase.util.CoprocessorClassLoader.loadClass(CoprocessorClassLoader.java:317)
at
org.apache.hadoop.hbase.util.CoprocessorClassLoader.loadClass(CoprocessorClassLoader.java:289)
at
org.apache.metron.hbase.coprocessor.EnrichmentCoprocessor.getZookeeperUrl(EnrichmentCoprocessor.java:148)
at
org.apache.metron.hbase.coprocessor.EnrichmentCoprocessor.start(EnrichmentCoprocessor.java:123)
at
org.apache.hadoop.hbase.coprocessor.BaseEnvironment.startup(BaseEnvironment.java:72)
at
org.apache.hadoop.hbase.coprocessor.CoprocessorHost.checkAndLoadInstance(CoprocessorHost.java:263)
at
org.apache.hadoop.hbase.coprocessor.CoprocessorHost.load(CoprocessorHost.java:226)
at
org.apache.hadoop.hbase.coprocessor.CoprocessorHost.load(CoprocessorHost.java:185)
at
org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.loadTableCoprocessors(RegionCoprocessorHost.java:378)
at
org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.<init>(RegionCoprocessorHost.java:274)
at
org.apache.hadoop.hbase.regionserver.HRegion.<init>(HRegion.java:810)
at
org.apache.hadoop.hbase.regionserver.HRegion.<init>(HRegion.java:710)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at
org.apache.hadoop.hbase.regionserver.HRegion.newHRegion(HRegion.java:6930)
at
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:7127)
at
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:7100)
at
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:7058)
at
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:7009)
at
org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.openRegion(OpenRegionHandler.java:283)
at
org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.process(OpenRegionHandler.java:108)
at
org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:104)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
```
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