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From "Michael Brown (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IMPALA-5080) test_java_udfs: OutOfMemoryError: PermGen space
Date Thu, 16 Mar 2017 20:58:41 GMT
Michael Brown created IMPALA-5080:
-------------------------------------

             Summary: test_java_udfs: OutOfMemoryError: PermGen space
                 Key: IMPALA-5080
                 URL: https://issues.apache.org/jira/browse/IMPALA-5080
             Project: IMPALA
          Issue Type: Bug
          Components: Frontend
    Affects Versions: Impala 2.9.0
            Reporter: Michael Brown
            Priority: Blocker


There was a Java OOM related to PermGen space in a release-mode UDF test. Googling, it seems
this is a memory area for Java, and that one gets around it by increasing limits or other
tweaks.

The UDF code hasn't changed in a while. Was there a recent change that used up too much memory,
and as a side-effect this test can fail? Have we slowly been approaching this limit all along?

end-to-end traceback:

{noformat}
 TestUdfExecution.test_java_udfs[exec_option: {'disable_codegen': True, 'exec_single_node_rows_threshold':
100, 'enable_expr_rewrites': True} | table_format: text/none]
query_test/test_udfs.py:309: in test_java_udfs
    self.run_test_case('QueryTest/java-udf', vector, use_db=unique_database)
common/impala_test_suite.py:359: in run_test_case
    result = self.__execute_query(target_impalad_client, query, user=user)
common/impala_test_suite.py:567: in __execute_query
    return impalad_client.execute(query, user=user)
common/impala_connection.py:160: in execute
    return self.__beeswax_client.execute(sql_stmt, user=user)
beeswax/impala_beeswax.py:173: in execute
    handle = self.__execute_query(query_string.strip(), user=user)
beeswax/impala_beeswax.py:339: in __execute_query
    self.wait_for_completion(handle)
beeswax/impala_beeswax.py:359: in wait_for_completion
    raise ImpalaBeeswaxException("Query aborted:" + error_log, None)
E   ImpalaBeeswaxException: ImpalaBeeswaxException:
E    Query aborted:
E   OutOfMemoryError: PermGen space
{noformat}

{noformat}
select * from
(select max(int_col) from functional.alltypesagg
 where identity(bool_col) union all
(select max(int_col) from functional.alltypesagg
 where identity(tinyint_col) > 1 union all
(select max(int_col) from functional.alltypesagg
 where identity(smallint_col) > 1 union all
(select max(int_col) from functional.alltypesagg
 where identity(int_col) > 1 union all
(select max(int_col) from functional.alltypesagg
 where identity(bigint_col) > 1 union all
(select max(int_col) from functional.alltypesagg
 where identity(float_col) > 1.0 union all
(select max(int_col) from functional.alltypesagg
 where identity(double_col) > 1.0 union all
(select max(int_col) from functional.alltypesagg
 where identity(string_col) > '1' union all
(select max(int_col) from functional.alltypesagg
 where not identity(bool_col) union all
(select max(int_col) from functional.alltypesagg
 where identity(tinyint_col) > 2 union all
(select max(int_col) from functional.alltypesagg
 where identity(smallint_col) > 2 union all
(select max(int_col) from functional.alltypesagg
 where identity(int_col) > 2 union all
(select max(int_col) from functional.alltypesagg
 where identity(bigint_col) > 2 union all
(select max(int_col) from functional.alltypesagg
 where identity(float_col) > 2.0 union all
(select max(int_col) from functional.alltypesagg
 where identity(double_col) > 2.0 union all
(select max(int_col) from functional.alltypesagg
 where identity(string_col) > '2'
)))))))))))))))) v;
{noformat}

from the impalad.log:

{noformat}
I0316 10:57:33.113581  6342 jni-util.cc:176] java.lang.OutOfMemoryError: PermGen space
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    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 java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:789)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:274)
    at org.apache.impala.hive.executor.UdfExecutor.init(UdfExecutor.java:584)
    at org.apache.impala.hive.executor.UdfExecutor.<init>(UdfExecutor.java:218)
{noformat}



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