Booked on https://issues.apache.org/jira/browse/HIVE-9486.
Thanks, Navis 2015-01-27 18:05 GMT+09:00 德明 施 <deming....@outlook.com>: > > > > Hi All, > I am not having some hive classpath issue. I think this is a bug. > I wrote my own SerDe "com.stanley.MySerde", which is a simple json > serializer; It is generally the same with the built-in SerDe > "org.apache.hadoop.hive.serde2.DelimitedJSONSerDe". > Then I issued the command:add jar /path/to/myjar.jar; (I am sure this > command worked)create table t1.json_1 row format serde > "com.stanley.MySerde" location '/user/stanley/test-data-1/' as select * > from t1.plain_table; > create table t1.json_2 row format serde > "org.apache.hadoop.hive.serde2.DelimitedJSONSerDe" location > '/user/stanley/test-data-2/' as select * from t1.plain_table; > The second command will succeed but the first one will fail with > ClassNotFoundException. But if I put myjar.jar to $HIVE_HOME/lib, both > command will succeed. I went through the code of the > org.apache.hadoop.hive.ql.plan.PlanUtils.java, seems it is using > Class.forname(clzname) to load the class, I think it should use the > Thread.contextClassLoader instead, am I right?There's a similar issue here: > https://issues.apache.org/jira/browse/HIVE-6495 > Here's the exception trace: java.lang.ClassNotFoundException: > com.ebay.p13n.hive.bexbat.serde.JsonLazySimpleSerDe at > java.net.URLClassLoader$1.run(URLClassLoader.java:366) at > java.net.URLClassLoader$1.run(URLClassLoader.java:355) at > java.security.AccessController.doPrivileged(Native Method) at > java.net.URLClassLoader.findClass(URLClassLoader.java:354) at > java.lang.ClassLoader.loadClass(ClassLoader.java:425) at > sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at > java.lang.ClassLoader.loadClass(ClassLoader.java:358) at > java.lang.Class.forName0(Native Method) at > java.lang.Class.forName(Class.java:190) at > org.apache.hadoop.hive.ql.plan.PlanUtils.getTableDesc(PlanUtils.java:310) > at > org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genFileSinkPlan(SemanticAnalyzer.java:5874) > at > org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPostGroupByBodyPlan(SemanticAnalyzer.java:8278) > at > org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genBodyPlan(SemanticAnalyzer.java:8169) > at > org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPlan(SemanticAnalyzer.java:9001) > at > org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:9267) > at > org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:327) > at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:427) at > org.apache.hadoop.hive.ql.Driver.compile(Driver.java:323) at > org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:980) at > org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1045) at > org.apache.hadoop.hive.ql.Driver.run(Driver.java:916) at > org.apache.hadoop.hive.ql.Driver.run(Driver.java:906) >
