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In its current form, Impala supports Java UDFs that are derived from the UDF.class. The UDF.class is legacy code and Hive now supports implementation off of the GenericUDF.class. This rewrite will allow for easier extension to support GenericUDFs. Among added classes: UdfExecutor: The entry point class which is directly accessed by the backend. This is a wrapper class to the UDF class that will handle the evaluation of rows. HiveUdfExecutor: Abstract base class that contains code that is common to the legacy UDF.class and the GenericUDF.class when it is eventually created. HiveUdfExecutorLegacy: Implementation of the code that is UDF.class specific. HiveUdfLoader: Class responsible for using reflection to instantiate the UDF class HiveJavaFunction: Interface for retrieving objects pertaining to the UDF function class. HiveLegacyJavaFunction: Class representing the metadata for the legacy UDF class. Also added some functionality which captures the error when a user attempts to create a function and the function doesn't exist. The unit test checking this is the UDFRound function which no longer exists in hive-exec.jar so it is now in a load-java-udfs-fail.test test file. Change-Id: Idc9572e15fbed1876412159b99dddd3fb4d37174 Reviewed-on: http://gerrit.cloudera.org:8080/18020 Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com> Reviewed-by: Csaba Ringhofer <csringhofer@cloudera.com> Tested-by: Csaba Ringhofer <csringhofer@cloudera.com>
88 lines
3.3 KiB
Plaintext
88 lines
3.3 KiB
Plaintext
====
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---- QUERY
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create function hive_pi() returns double
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location '$FILESYSTEM_PREFIX/test-warehouse/hive-exec.jar'
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symbol='org.apache.hadoop.hive.ql.udf.UDFPI';
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create function hive_bin(bigint) returns string
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location '$FILESYSTEM_PREFIX/test-warehouse/hive-exec.jar'
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symbol='org.apache.hadoop.hive.ql.udf.UDFBin';
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# Used to test persistent java functions
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create function identity_anytype
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location '$FILESYSTEM_PREFIX/test-warehouse/impala-hive-udfs.jar'
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symbol='org.apache.impala.TestUdf';
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create function identity(boolean) returns boolean
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location '$FILESYSTEM_PREFIX/test-warehouse/impala-hive-udfs.jar'
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symbol='org.apache.impala.TestUdf';
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create function identity(tinyint) returns tinyint
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location '$FILESYSTEM_PREFIX/test-warehouse/impala-hive-udfs.jar'
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symbol='org.apache.impala.TestUdf';
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create function identity(smallint) returns smallint
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location '$FILESYSTEM_PREFIX/test-warehouse/impala-hive-udfs.jar'
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symbol='org.apache.impala.TestUdf';
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create function identity(int) returns int
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location '$FILESYSTEM_PREFIX/test-warehouse/impala-hive-udfs.jar'
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symbol='org.apache.impala.TestUdf';
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create function identity(bigint) returns bigint
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location '$FILESYSTEM_PREFIX/test-warehouse/impala-hive-udfs.jar'
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symbol='org.apache.impala.TestUdf';
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create function identity(float) returns float
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location '$FILESYSTEM_PREFIX/test-warehouse/impala-hive-udfs.jar'
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symbol='org.apache.impala.TestUdf';
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create function identity(double) returns double
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location '$FILESYSTEM_PREFIX/test-warehouse/impala-hive-udfs.jar'
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symbol='org.apache.impala.TestUdf';
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create function identity(string) returns string
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location '$FILESYSTEM_PREFIX/test-warehouse/impala-hive-udfs.jar'
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symbol='org.apache.impala.TestUdf';
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create function identity(string, string) returns string
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location '$FILESYSTEM_PREFIX/test-warehouse/impala-hive-udfs.jar'
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symbol='org.apache.impala.TestUdf';
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create function identity(string, string, string) returns string
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location '$FILESYSTEM_PREFIX/test-warehouse/impala-hive-udfs.jar'
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symbol='org.apache.impala.TestUdf';
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create function hive_add(int, int) returns int
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location '$FILESYSTEM_PREFIX/test-warehouse/impala-hive-udfs.jar'
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symbol='org.apache.impala.TestUdf';
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create function hive_add(smallint, smallint) returns smallint
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location '$FILESYSTEM_PREFIX/test-warehouse/impala-hive-udfs.jar'
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symbol='org.apache.impala.TestUdf';
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create function hive_add(float, float) returns float
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location '$FILESYSTEM_PREFIX/test-warehouse/impala-hive-udfs.jar'
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symbol='org.apache.impala.TestUdf';
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create function hive_add(double, double) returns double
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location '$FILESYSTEM_PREFIX/test-warehouse/impala-hive-udfs.jar'
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symbol='org.apache.impala.TestUdf';
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create function hive_add(boolean, boolean) returns boolean
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location '$FILESYSTEM_PREFIX/test-warehouse/impala-hive-udfs.jar'
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symbol='org.apache.impala.TestUdf';
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create function throws_exception() returns boolean
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location '$FILESYSTEM_PREFIX/test-warehouse/impala-hive-udfs.jar'
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symbol='org.apache.impala.TestUdfException';
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create function replace_string(string) returns string
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location '$FILESYSTEM_PREFIX/test-warehouse/impala-hive-udfs.jar'
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symbol='org.apache.impala.ReplaceStringUdf';
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create function import_nearby_classes(string) returns string
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location '$FILESYSTEM_PREFIX/test-warehouse/impala-hive-udfs.jar'
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symbol='org.apache.impala.ImportsNearbyClassesUdf';
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====
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