[BugFix] add return type check in Java UDTF (backport #50615)

be/src/exprs/table_function/java_udtf_function.cpp

@@ -21,6 +21,7 @@
 #include "column/column_helper.h"
 #include "column/nullable_column.h"
 #include "column/vectorized_fwd.h"
+#include "common/compiler_util.h"
 #include "exprs/table_function/table_function.h"
 #include "gutil/casts.h"
 #include "jni.h"
@@ -137,21 +138,28 @@ std::pair<Columns, UInt32Column::Ptr> JavaUDTFFunction::process(RuntimeState* ru
 
     std::vector<jvalue> call_stack;
     std::vector<jobject> rets;
-    DeferOp defer = DeferOp([&]() {
-        // clean up arrays
-        for (auto& ret : rets) {
-            if (ret) {
-                env->DeleteLocalRef(ret);
-            }
-        }
-    });
     size_t num_rows = cols[0]->size();
     size_t num_cols = cols.size();
     state->set_processed_rows(num_rows);
 
     call_stack.reserve(num_cols);
     rets.resize(num_rows);
+
+    // reserve 16 local refs
+    DeferOp defer = DeferOp([&]() {
+        // clean up arrays
+        env->PopLocalFrame(nullptr);
+    });
+    env->PushLocalFrame(num_cols * num_rows + 16);
+
     for (int i = 0; i < num_rows; ++i) {
+        DeferOp defer = DeferOp([&]() {
+            for (int j = 0; j < num_cols; ++j) {
+                release_jvalue(stateUDTF->method_process()->method_desc[j + 1].is_box, call_stack[j]);
+            }
+            call_stack.clear();
+        });
+
         for (int j = 0; j < num_cols; ++j) {
             auto method_type = stateUDTF->method_process()->method_desc[j + 1];
             jvalue val = cast_to_jvalue<true>(method_type.type, method_type.is_box, cols[j].get(), i);
@@ -160,11 +168,13 @@ std::pair<Columns, UInt32Column::Ptr> JavaUDTFFunction::process(RuntimeState* ru
 
         rets[i] = env->CallObjectMethodA(stateUDTF->handle(), methodID, call_stack.data());
 
-        for (int j = 0; j < num_cols; ++j) {
-            release_jvalue(stateUDTF->method_process()->method_desc[j + 1].is_box, call_stack[j]);
+        if (auto jthr = helper.getEnv()->ExceptionOccurred(); jthr != nullptr) {
+            std::string err = fmt::format("execute UDF Function meet Exception:{}", helper.dumpExceptionString(jthr));
+            LOG(WARNING) << err;
+            helper.getEnv()->ExceptionClear();
+            state->set_status(Status::InternalError(err));
+            return std::make_pair(Columns{}, nullptr);
         }
-
-        call_stack.clear();
     }
 
     // Build Return Type
@@ -185,8 +195,12 @@ std::pair<Columns, UInt32Column::Ptr> JavaUDTFFunction::process(RuntimeState* ru
         for (int j = 0; j < len; ++j) {
             jobject vi = env->GetObjectArrayElement((jobjectArray)rets[i], j);
             LOCAL_REF_GUARD_ENV(env, vi);
+            auto st = check_type_matched(method_desc, vi);
+            if (UNLIKELY(!st.ok())) {
+                state->set_status(st);
+                return std::make_pair(Columns{}, nullptr);
+            }
             append_jvalue(method_desc, col.get(), {.l = vi});
-            release_jvalue(method_desc.is_box, {.l = vi});
         }
     }
 

be/src/udf/java/java_data_converter.cpp

@@ -21,6 +21,8 @@
 #include "column/type_traits.h"
 #include "common/compiler_util.h"
 #include "common/status.h"
+#include "udf/java/java_udf.h"
+#include "util/defer_op.h"
 
 #define APPLY_FOR_NUMBERIC_TYPE(M) \
     M(TYPE_BOOLEAN)                \
@@ -161,7 +163,8 @@ void assign_jvalue(MethodTypeDescriptor method_type_desc, Column* col, int row_n
         if (val.l == nullptr) {
             col->append_nulls(1);
         } else {
-            auto slice = helper.sliceVal((jstring)val.l);
+            std::string buffer;
+            auto slice = helper.sliceVal((jstring)val.l, &buffer);
             col->append_datum(Datum(slice));
         }
         break;
@@ -209,7 +212,8 @@ void append_jvalue(MethodTypeDescriptor method_type_desc, Column* col, jvalue va
             APPEND_BOX_TYPE(TYPE_DOUBLE, double)
 
         case TYPE_VARCHAR: {
-            auto slice = helper.sliceVal((jstring)val.l);
+            std::string buffer;
+            auto slice = helper.sliceVal((jstring)val.l, &buffer);
             col->append_datum(Datum(slice));
             break;
         }
@@ -220,6 +224,50 @@ void append_jvalue(MethodTypeDescriptor method_type_desc, Column* col, jvalue va
     }
 }
 
+Status check_type_matched(MethodTypeDescriptor method_type_desc, jobject val) {
+    if (val == nullptr) {
+        return Status::OK();
+    }
+    auto& helper = JVMFunctionHelper::getInstance();
+    auto* env = helper.getEnv();
+
+    switch (method_type_desc.type) {
+#define INSTANCE_OF_TYPE(NAME, TYPE)                                                            \
+    case NAME: {                                                                                \
+        if (!env->IsInstanceOf(val, helper.TYPE##_class())) {                                   \
+            auto clazz = env->GetObjectClass(val);                                              \
+            LOCAL_REF_GUARD(clazz);                                                             \
+            return Status::InternalError(fmt::format("Type not matched, expect {}, but got {}", \
+                                                     helper.to_string(helper.TYPE##_class()),   \
+                                                     helper.to_string(clazz)));                 \
+        }                                                                                       \
+        break;                                                                                  \
+    }
+        INSTANCE_OF_TYPE(TYPE_BOOLEAN, uint8_t)
+        INSTANCE_OF_TYPE(TYPE_TINYINT, int8_t)
+        INSTANCE_OF_TYPE(TYPE_SMALLINT, int16_t)
+        INSTANCE_OF_TYPE(TYPE_INT, int32_t)
+        INSTANCE_OF_TYPE(TYPE_BIGINT, int64_t)
+        INSTANCE_OF_TYPE(TYPE_FLOAT, float)
+        INSTANCE_OF_TYPE(TYPE_DOUBLE, double)
+    case TYPE_VARCHAR: {
+        std::string buffer;
+        if (!env->IsInstanceOf(val, helper.string_clazz())) {
+            auto clazz = env->GetObjectClass(val);
+            LOCAL_REF_GUARD(clazz);
+            return Status::InternalError(
+                    fmt::format("Type not matched, expect string, but got {}", helper.to_string(clazz)));
+        }
+        break;
+    }
+    default:
+        DCHECK(false) << "unsupport UDF TYPE" << method_type_desc.type;
+        break;
+    }
+
+    return Status::OK();
+}
+
 Status ConvertDirectBufferVistor::do_visit(const NullableColumn& column) {
     const auto& null_data = column.immutable_null_column_data();
     _buffers.emplace_back((void*)null_data.data(), null_data.size());

be/src/udf/java/java_data_converter.h

@@ -64,4 +64,5 @@ template <bool handle_null>
 jvalue cast_to_jvalue(LogicalType type, bool is_boxed, const Column* col, int row_num);
 void release_jvalue(bool is_boxed, jvalue val);
 void append_jvalue(MethodTypeDescriptor method_type_desc, Column* col, jvalue val);
+Status check_type_matched(MethodTypeDescriptor method_type_desc, jobject val);
 } // namespace starrocks

be/src/udf/java/java_udf.cpp

@@ -417,10 +417,6 @@ Slice JVMFunctionHelper::sliceVal(jstring jstr, std::string* buffer) {
     return {buffer->data(), buffer->length()};
 }
 
-Slice JVMFunctionHelper::sliceVal(jstring jstr) {
-    return {_env->GetStringUTFChars(jstr, nullptr)};
-}
-
 std::string JVMFunctionHelper::to_jni_class_name(const std::string& name) {
     std::string jni_class_name;
     auto inserter = std::inserter(jni_class_name, jni_class_name.end());

be/src/udf/java/java_udf.h

@@ -37,9 +37,10 @@ extern "C" JNIEnv* getJNIEnv(void);
     jmethodID _value_of_##TYPE;     \
     jmethodID _val_##TYPE;
 
-#define DECLARE_NEW_BOX(TYPE, CLAZZ) \
-    jobject new##CLAZZ(TYPE value);  \
-    TYPE val##TYPE(jobject obj);
+#define DECLARE_NEW_BOX(PRIM_CLAZZ, TYPE, CLAZZ) \
+    jobject new##CLAZZ(TYPE value);              \
+    TYPE val##TYPE(jobject obj);                 \
+    jclass TYPE##_class() { return _class_##PRIM_CLAZZ; }
 
 namespace starrocks {
 class DirectByteBuffer;
@@ -59,6 +60,7 @@ class JVMFunctionHelper {
     // Arrays.toString()
     std::string array_to_string(jobject object);
     // Object::toString()
+    bool equals(jobject obj1, jobject obj2);
     std::string to_string(jobject obj);
     std::string to_cxx_string(jstring str);
     std::string dumpExceptionString(jthrowable throwable);
@@ -117,19 +119,19 @@ class JVMFunctionHelper {
     jobject list_get(jobject obj, int idx);
     int list_size(jobject obj);
 
-    DECLARE_NEW_BOX(uint8_t, Boolean)
-    DECLARE_NEW_BOX(int8_t, Byte)
-    DECLARE_NEW_BOX(int16_t, Short)
-    DECLARE_NEW_BOX(int32_t, Integer)
-    DECLARE_NEW_BOX(int64_t, Long)
-    DECLARE_NEW_BOX(float, Float)
-    DECLARE_NEW_BOX(double, Double)
+    DECLARE_NEW_BOX(boolean, uint8_t, Boolean)
+    DECLARE_NEW_BOX(byte, int8_t, Byte)
+    DECLARE_NEW_BOX(short, int16_t, Short)
+    DECLARE_NEW_BOX(int, int32_t, Integer)
+    DECLARE_NEW_BOX(long, int64_t, Long)
+    DECLARE_NEW_BOX(float, float, Float)
+    DECLARE_NEW_BOX(double, double, Double)
 
     jobject newString(const char* data, size_t size);
-
-    Slice sliceVal(jstring jstr);
     size_t string_length(jstring jstr);
+
     Slice sliceVal(jstring jstr, std::string* buffer);
+    jclass string_clazz() { return _string_class; }
     // replace '.' as '/'
     // eg: java.lang.Integer -> java/lang/Integer
     static std::string to_jni_class_name(const std::string& name);

test/sql/test_udf/R/test_jvm_udf

@@ -9,6 +9,48 @@ type = "StarrocksJar"
 file = "${udf_url}/starrocks-jdbc%2FSumbigint.jar";
 -- result:
 -- !result
+CREATE TABLE FUNCTION udtfstring(string)
+RETURNS string
+symbol = "UDTFstring"
+type = "StarrocksJar"
+file = "${udf_url}/starrocks-jdbc%2FUDTFstring.jar";
+-- result:
+-- !result
+CREATE TABLE FUNCTION udtfstring_wrong_match(string)
+RETURNS int
+symbol = "UDTFstring"
+type = "StarrocksJar"
+file = "${udf_url}/starrocks-jdbc%2FUDTFstring.jar";
+-- result:
+-- !result
+CREATE TABLE FUNCTION udtfint(int)
+RETURNS int
+symbol = "UDTFint"
+type = "StarrocksJar"
+file = "${udf_url}/starrocks-jdbc%2FUDTFint.jar";
+-- result:
+-- !result
+CREATE TABLE FUNCTION udtfbigint(bigint)
+RETURNS bigint
+symbol = "UDTFbigint"
+type = "StarrocksJar"
+file = "${udf_url}/starrocks-jdbc%2FUDTFbigint.jar";
+-- result:
+-- !result
+CREATE TABLE FUNCTION udtffloat(float)
+RETURNS float
+symbol = "UDTFfloat"
+type = "StarrocksJar"
+file = "${udf_url}/starrocks-jdbc%2FUDTFfloat.jar";
+-- result:
+-- !result
+CREATE TABLE FUNCTION udtfdouble(double)
+RETURNS double
+symbol = "UDTFdouble"
+type = "StarrocksJar"
+file = "${udf_url}/starrocks-jdbc%2FUDTFdouble.jar";
+-- result:
+-- !result
 CREATE TABLE `t0` (
   `c0` int(11) NULL COMMENT "",
   `c1` varchar(20) NULL COMMENT "",
@@ -25,6 +67,30 @@ PROPERTIES (
 insert into t0 SELECT generate_series, generate_series, generate_series, generate_series FROM TABLE(generate_series(1,  40960));
 -- result:
 -- !result
+select count(udtfstring) from t0, udtfstring(c1);
+-- result:
+81920
+-- !result
+select count(udtfstring_wrong_match) from t0, udtfstring_wrong_match(c1);
+-- result:
+E: (1064, 'Type not matched, expect class java.lang.Integer, but got class java.lang.String')
+-- !result
+select count(udtfint) from t0, udtfint(c1);
+-- result:
+81920
+-- !result
+select count(udtfbigint) from t0, udtfbigint(c1);
+-- result:
+81920
+-- !result
+select count(udtffloat) from t0, udtffloat(c1);
+-- result:
+81920
+-- !result
+select count(udtfdouble) from t0, udtfdouble(c1);
+-- result:
+81920
+-- !result
 set streaming_preaggregation_mode="force_streaming";
 -- result:
 -- !result

test/sql/test_udf/T/test_jvm_udf

@@ -8,6 +8,43 @@ symbol = "Sumbigint"
 type = "StarrocksJar"
 file = "${udf_url}/starrocks-jdbc%2FSumbigint.jar";
 
+CREATE TABLE FUNCTION udtfstring(string)
+RETURNS string
+symbol = "UDTFstring"
+type = "StarrocksJar"
+file = "${udf_url}/starrocks-jdbc%2FUDTFstring.jar";
+
+CREATE TABLE FUNCTION udtfstring_wrong_match(string)
+RETURNS int
+symbol = "UDTFstring"
+type = "StarrocksJar"
+file = "${udf_url}/starrocks-jdbc%2FUDTFstring.jar";
+
+CREATE TABLE FUNCTION udtfint(int)
+RETURNS int
+symbol = "UDTFint"
+type = "StarrocksJar"
+file = "${udf_url}/starrocks-jdbc%2FUDTFint.jar";
+
+CREATE TABLE FUNCTION udtfbigint(bigint)
+RETURNS bigint
+symbol = "UDTFbigint"
+type = "StarrocksJar"
+file = "${udf_url}/starrocks-jdbc%2FUDTFbigint.jar";
+
+CREATE TABLE FUNCTION udtffloat(float)
+RETURNS float
+symbol = "UDTFfloat"
+type = "StarrocksJar"
+file = "${udf_url}/starrocks-jdbc%2FUDTFfloat.jar";
+
+CREATE TABLE FUNCTION udtfdouble(double)
+RETURNS double
+symbol = "UDTFdouble"
+type = "StarrocksJar"
+file = "${udf_url}/starrocks-jdbc%2FUDTFdouble.jar";
+
+
 CREATE TABLE `t0` (
   `c0` int(11) NULL COMMENT "",
   `c1` varchar(20) NULL COMMENT "",
@@ -22,6 +59,14 @@ PROPERTIES (
 
 insert into t0 SELECT generate_series, generate_series, generate_series, generate_series FROM TABLE(generate_series(1,  40960));
 
+-- test udtf cases
+select count(udtfstring) from t0, udtfstring(c1);
+select count(udtfstring_wrong_match) from t0, udtfstring_wrong_match(c1);
+select count(udtfint) from t0, udtfint(c1);
+select count(udtfbigint) from t0, udtfbigint(c1);
+select count(udtffloat) from t0, udtffloat(c1);
+select count(udtfdouble) from t0, udtfdouble(c1);
+
 -- test group by limit case:
 set streaming_preaggregation_mode="force_streaming";
 select sum(delta), count(*), count(delta) from (select (sum(c3) - sumbigint(c3)) as delta from t0 group by c0,c1 limit 10) tb;