Details
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Improvement
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Status: Closed
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Major
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Resolution: Fixed
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None
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None
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None
Description
TEZ-4228 fixes an issue from tez side, which is about to use TezClassLoader instead of the system classloader. However, there are some codepaths, e.g. in hive_log_llap.log
which shows that the system class loader is used. As thread context classloaders are inherited, the easier solution is to early-initialize TezClassLoader in LlapDaemon, and let all threads use that as context class loader, so this solution is more like TEZ-4223 for llap daemons.
2020-09-02T00:18:20,242 ERROR [TezTR-93696_1_1_1_0_0] tez.TezProcessor: java.lang.RuntimeException: Map operator initialization failed at org.apache.hadoop.hive.ql.exec.tez.MapRecordProcessor.init(MapRecordProcessor.java:351) at org.apache.hadoop.hive.ql.exec.tez.TezProcessor.initializeAndRunProcessor(TezProcessor.java:266) at org.apache.hadoop.hive.ql.exec.tez.TezProcessor.run(TezProcessor.java:250) at org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.run(LogicalIOProcessorRuntimeTask.java:381) at org.apache.tez.runtime.task.TaskRunner2Callable$1.run(TaskRunner2Callable.java:75) at org.apache.tez.runtime.task.TaskRunner2Callable$1.run(TaskRunner2Callable.java:62) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1682) at org.apache.tez.runtime.task.TaskRunner2Callable.callInternal(TaskRunner2Callable.java:62) at org.apache.tez.runtime.task.TaskRunner2Callable.callInternal(TaskRunner2Callable.java:38) at org.apache.tez.common.CallableWithNdc.call(CallableWithNdc.java:36) at org.apache.hadoop.hive.llap.daemon.impl.StatsRecordingThreadPool$WrappedCallable.call(StatsRecordingThreadPool.java:118) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.RuntimeException: java.lang.ClassNotFoundException: org.apache.hadoop.hive.serde2.TestSerDe at org.apache.hadoop.hive.ql.exec.MapOperator.getConvertedOI(MapOperator.java:332) at org.apache.hadoop.hive.ql.exec.MapOperator.setChildren(MapOperator.java:427) at org.apache.hadoop.hive.ql.exec.tez.MapRecordProcessor.init(MapRecordProcessor.java:288) ... 16 more Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: org.apache.hadoop.hive.serde2.TestSerDe at org.apache.hadoop.hive.ql.plan.TableDesc.getDeserializerClass(TableDesc.java:79) at org.apache.hadoop.hive.ql.plan.TableDesc.getDeserializer(TableDesc.java:100) at org.apache.hadoop.hive.ql.plan.TableDesc.getDeserializer(TableDesc.java:95) at org.apache.hadoop.hive.ql.exec.MapOperator.getConvertedOI(MapOperator.java:313) ... 18 more Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.hive.serde2.TestSerDe at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at org.apache.hadoop.hive.ql.plan.TableDesc.getDeserializerClass(TableDesc.java:76) ... 21 more
Attachments
Attachments
Issue Links
- blocks
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- Closed
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- is related to
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TEZ-4228 TezClassLoader should be used in TezChild and for Configuration objects
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- Resolved
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