hello all, we are slowly expanding our test coverage for spark
2.0.0-SNAPSHOT to more in-house projects. today i ran into this issue...
this runs fine:
val df = sc.parallelize(List(("1", "2"), ("3", "4"))).toDF("a", "b")
df
.map(row => row)(RowEncoder(df.schema))
.select("a", "b")
.show
however this fails:
val df = sc.parallelize(List(("1", "2"), ("3", "4"))).toDF("a", "b")
df
.map(row => row)(RowEncoder(df.schema))
.select("b", "a")
.show
the error is:
java.lang.Exception: failed to compile:
org.codehaus.commons.compiler.CompileException: File 'generated.java', Line
94, Column 57: Expression "mapelements_isNull" is not an rvalue
/* 001 */ public Object generate(Object[] references) {
/* 002 */ return new GeneratedIterator(references);
/* 003 */ }
/* 004 */
/* 005 */ /** Codegened pipeline for:
/* 006 */ * Project [b#11,a#10]
/* 007 */ +- SerializeFromObject [if (input[0,
org.apache.spark.sql.Row].isNullAt) null else staticinvoke(class org.ap...
/* 008 */ */
/* 009 */ final class GeneratedIterator extends
org.apache.spark.sql.execution.BufferedRowIterator {
/* 010 */ private Object[] references;
/* 011 */ private scala.collection.Iterator inputadapter_input;
/* 012 */ private UnsafeRow project_result;
/* 013 */ private
org.apache.spark.sql.catalyst.expressions.codegen.BufferHolder
project_holder;
/* 014 */ private
org.apache.spark.sql.catalyst.expressions.codegen.UnsafeRowWriter
project_rowWriter;
/* 015 */ private Object[] deserializetoobject_values;
/* 016 */ private org.apache.spark.sql.types.StructType
deserializetoobject_schema;
/* 017 */ private UnsafeRow deserializetoobject_result;
/* 018 */ private
org.apache.spark.sql.catalyst.expressions.codegen.BufferHolder
deserializetoobject_holder;
/* 019 */ private
org.apache.spark.sql.catalyst.expressions.codegen.UnsafeRowWriter
deserializetoobject_rowWriter;
/* 020 */ private UnsafeRow mapelements_result;
/* 021 */ private
org.apache.spark.sql.catalyst.expressions.codegen.BufferHolder
mapelements_holder;
/* 022 */ private
org.apache.spark.sql.catalyst.expressions.codegen.UnsafeRowWriter
mapelements_rowWriter;
/* 023 */ private UnsafeRow serializefromobject_result;
/* 024 */ private
org.apache.spark.sql.catalyst.expressions.codegen.BufferHolder
serializefromobject_holder;
/* 025 */ private
org.apache.spark.sql.catalyst.expressions.codegen.UnsafeRowWriter
serializefromobject_rowWriter;
/* 026 */ private UnsafeRow project_result1;
/* 027 */ private
org.apache.spark.sql.catalyst.expressions.codegen.BufferHolder
project_holder1;
/* 028 */ private
org.apache.spark.sql.catalyst.expressions.codegen.UnsafeRowWriter
project_rowWriter1;
/* 029 */
/* 030 */ public GeneratedIterator(Object[] references) {
/* 031 */ this.references = references;
/* 032 */ }
/* 033 */
/* 034 */ public void init(int index, scala.collection.Iterator inputs[])
{
/* 035 */ partitionIndex = index;
/* 036 */ inputadapter_input = inputs[0];
/* 037 */ project_result = new UnsafeRow(2);
/* 038 */ this.project_holder = new
org.apache.spark.sql.catalyst.expressions.codegen.BufferHolder(project_result,
64);
/* 039 */ this.project_rowWriter = new
org.apache.spark.sql.catalyst.expressions.codegen.UnsafeRowWriter(project_holder,
2);
/* 040 */
/* 041 */ this.deserializetoobject_schema =
(org.apache.spark.sql.types.StructType) references[0];
/* 042 */ deserializetoobject_result = new UnsafeRow(1);
/* 043 */ this.deserializetoobject_holder = new
org.apache.spark.sql.catalyst.expressions.codegen.BufferHolder(deserializetoobject_result,
32);
/* 044 */ this.deserializetoobject_rowWriter = new
org.apache.spark.sql.catalyst.expressions.codegen.UnsafeRowWriter(deserializetoobject_holder,
1);
/* 045 */ mapelements_result = new UnsafeRow(1);
/* 046 */ this.mapelements_holder = new
org.apache.spark.sql.catalyst.expressions.codegen.BufferHolder(mapelements_result,
32);
/* 047 */ this.mapelements_rowWriter = new
org.apache.spark.sql.catalyst.expressions.codegen.UnsafeRowWriter(mapelements_holder,
1);
/* 048 */ serializefromobject_result = new UnsafeRow(2);
/* 049 */ this.serializefromobject_holder = new
org.apache.spark.sql.catalyst.expressions.codegen.BufferHolder(serializefromobject_result,
64);
/* 050 */ this.serializefromobject_rowWriter = new
org.apache.spark.sql.catalyst.expressions.codegen.UnsafeRowWriter(serializefromobject_holder,
2);
/* 051 */ project_result1 = new UnsafeRow(2);
/* 052 */ this.project_holder1 = new
org.apache.spark.sql.catalyst.expressions.codegen.BufferHolder(project_result1,
64);
/* 053 */ this.project_rowWriter1 = new
org.apache.spark.sql.catalyst.expressions.codegen.UnsafeRowWriter(project_holder1,
2);
/* 054 */ }
/* 055 */
/* 056 */ protected void processNext() throws java.io.IOException {
/* 057 */ /*** PRODUCE: Project [b#11,a#10] */
/* 058 */
/* 059 */ /*** PRODUCE: SerializeFromObject [if (input[0,
org.apache.spark.sql.Row].isNullAt) null else staticinvoke(class
org.apache.spark.unsafe.types... */
/* 060 */
/* 061 */ /*** PRODUCE: MapElements <function1>, obj#9:
org.apache.spark.sql.Row */
/* 062 */
/* 063 */ /*** PRODUCE: DeserializeToObject createexternalrow(if
(isnull(a#5)) null else a#5.toString, if (isnull(b#6)) null else
b#6.toString, StructFi... */
/* 064 */
/* 065 */ /*** PRODUCE: Project [_1#2 AS a#5,_2#3 AS b#6] */
/* 066 */
/* 067 */ /*** PRODUCE: INPUT */
/* 068 */
/* 069 */ while (inputadapter_input.hasNext()) {
/* 070 */ InternalRow inputadapter_row = (InternalRow)
inputadapter_input.next();
/* 071 */ /*** CONSUME: Project [_1#2 AS a#5,_2#3 AS b#6] */
/* 072 */
/* 073 */ /*** CONSUME: DeserializeToObject createexternalrow(if
(isnull(a#5)) null else a#5.toString, if (isnull(b#6)) null else
b#6.toString, StructFi... */
/* 074 */ /* input[0, string] */
/* 075 */ /* input[0, string] */
/* 076 */ boolean inputadapter_isNull = inputadapter_row.isNullAt(0);
/* 077 */ UTF8String inputadapter_value = inputadapter_isNull ? null
: (inputadapter_row.getUTF8String(0));
/* 078 */ /* input[1, string] */
/* 079 */ /* input[1, string] */
/* 080 */ boolean inputadapter_isNull1 = inputadapter_row.isNullAt(1);
/* 081 */ UTF8String inputadapter_value1 = inputadapter_isNull1 ?
null : (inputadapter_row.getUTF8String(1));
/* 082 */
/* 083 */ /*** CONSUME: MapElements <function1>, obj#9:
org.apache.spark.sql.Row */
/* 084 */
/* 085 */ /*** CONSUME: SerializeFromObject [if (input[0,
org.apache.spark.sql.Row].isNullAt) null else staticinvoke(class
org.apache.spark.unsafe.types... */
/* 086 */
/* 087 */ /*** CONSUME: Project [b#11,a#10] */
/* 088 */
/* 089 */ /*** CONSUME: WholeStageCodegen */
/* 090 */
/* 091 */ /* input[1, string] */
/* 092 */ /* if (input[0, org.apache.spark.sql.Row].isNullAt) null
else staticinvoke(class org.apache.spark.unsafe.types.UTF8String,
StringTy... */
/* 093 */ /* input[0, org.apache.spark.sql.Row].isNullAt */
/* 094 */ boolean serializefromobject_isNull9 = mapelements_isNull ||
false;
/* 095 */ final boolean serializefromobject_value9 =
serializefromobject_isNull9 ? false : mapelements_value.isNullAt(1);
/* 096 */ boolean serializefromobject_isNull8 = false;
/* 097 */ UTF8String serializefromobject_value8 = null;
/* 098 */ if (!serializefromobject_isNull9 &&
serializefromobject_value9) {
/* 099 */ /* null */
/* 100 */ final UTF8String serializefromobject_value12 = null;
/* 101 */ serializefromobject_isNull8 = true;
/* 102 */ serializefromobject_value8 = serializefromobject_value12;
/* 103 */ } else {
/* 104 */ /* staticinvoke(class
org.apache.spark.unsafe.types.UTF8String, StringType, fromString,
getexternalrowfield(input[0, org.apache.spa... */
/* 105 */ /* getexternalrowfield(input[0,
org.apache.spark.sql.Row], 1, ObjectType(class java.lang.String)) */
/* 106 */ if (mapelements_isNull) {
/* 107 */ throw new RuntimeException("The input external row
cannot be null.");
/* 108 */ }
/* 109 */
/* 110 */ if (mapelements_value.isNullAt(1)) {
/* 111 */ throw new RuntimeException("The 1th field of input row
cannot be null.");
/* 112 */ }
/* 113 */
/* 114 */ final java.lang.String serializefromobject_value14 =
(java.lang.String) mapelements_value.get(1);
/* 115 */ boolean serializefromobject_isNull13 = false;
/* 116 */ final UTF8String serializefromobject_value13 =
serializefromobject_isNull13 ? null :
org.apache.spark.unsafe.types.UTF8String.fromString(serializefromobject_value14);
/* 117 */ serializefromobject_isNull13 =
serializefromobject_value13 == null;
/* 118 */ serializefromobject_isNull8 =
serializefromobject_isNull13;
/* 119 */ serializefromobject_value8 = serializefromobject_value13;
/* 120 */ }
/* 121 */ /* input[0, string] */
/* 122 */ /* if (input[0, org.apache.spark.sql.Row].isNullAt) null
else staticinvoke(class org.apache.spark.unsafe.types.UTF8String,
StringTy... */
/* 123 */ /* input[0, org.apache.spark.sql.Row].isNullAt */
/* 124 */ /* input[0, org.apache.spark.sql.Row] */
/* 125 */ /* <function1>.apply */
/* 126 */ /* <function1> */
/* 127 */ /* expression: <function1> */
/* 128 */ Object mapelements_obj = ((Expression)
references[1]).eval(null);
/* 129 */ scala.Function1 mapelements_value1 = (scala.Function1)
mapelements_obj;
/* 130 */ /* input[0, org.apache.spark.sql.Row] */
/* 131 */ /* createexternalrow(if (isnull(input[0, string])) null
else input[0, string].toString, if (isnull(input[1, string])) null else
inp... */
/* 132 */ deserializetoobject_values = new Object[2];
/* 133 */ /* if (isnull(input[0, string])) null else input[0,
string].toString */
/* 134 */ boolean deserializetoobject_isNull1 = false;
/* 135 */ java.lang.String deserializetoobject_value1 = null;
/* 136 */ if (!false && inputadapter_isNull) {
/* 137 */ /* null */
/* 138 */ final java.lang.String deserializetoobject_value4 = null;
/* 139 */ deserializetoobject_isNull1 = true;
/* 140 */ deserializetoobject_value1 = deserializetoobject_value4;
/* 141 */ } else {
/* 142 */ /* input[0, string].toString */
/* 143 */ boolean deserializetoobject_isNull5 = inputadapter_isNull;
/* 144 */ final java.lang.String deserializetoobject_value5 =
deserializetoobject_isNull5 ? null : (java.lang.String)
inputadapter_value.toString();
/* 145 */ deserializetoobject_isNull5 = deserializetoobject_value5
== null;
/* 146 */ deserializetoobject_isNull1 = deserializetoobject_isNull5;
/* 147 */ deserializetoobject_value1 = deserializetoobject_value5;
/* 148 */ }
/* 149 */ if (deserializetoobject_isNull1) {
/* 150 */ deserializetoobject_values[0] = null;
/* 151 */ } else {
/* 152 */ deserializetoobject_values[0] =
deserializetoobject_value1;
/* 153 */ }
/* 154 */ /* if (isnull(input[1, string])) null else input[1,
string].toString */
/* 155 */ boolean deserializetoobject_isNull7 = false;
/* 156 */ java.lang.String deserializetoobject_value7 = null;
/* 157 */ if (!false && inputadapter_isNull1) {
/* 158 */ /* null */
/* 159 */ final java.lang.String deserializetoobject_value10 = null;
/* 160 */ deserializetoobject_isNull7 = true;
/* 161 */ deserializetoobject_value7 = deserializetoobject_value10;
/* 162 */ } else {
/* 163 */ /* input[1, string].toString */
/* 164 */ boolean deserializetoobject_isNull11 =
inputadapter_isNull1;
/* 165 */ final java.lang.String deserializetoobject_value11 =
deserializetoobject_isNull11 ? null : (java.lang.String)
inputadapter_value1.toString();
/* 166 */ deserializetoobject_isNull11 =
deserializetoobject_value11 == null;
/* 167 */ deserializetoobject_isNull7 =
deserializetoobject_isNull11;
/* 168 */ deserializetoobject_value7 = deserializetoobject_value11;
/* 169 */ }
/* 170 */ if (deserializetoobject_isNull7) {
/* 171 */ deserializetoobject_values[1] = null;
/* 172 */ } else {
/* 173 */ deserializetoobject_values[1] =
deserializetoobject_value7;
/* 174 */ }
/* 175 */
/* 176 */ final org.apache.spark.sql.Row deserializetoobject_value =
new
org.apache.spark.sql.catalyst.expressions.GenericRowWithSchema(deserializetoobject_values,
this.deserializetoobject_schema);
/* 177 */ boolean mapelements_isNull = false || false;
/* 178 */ final org.apache.spark.sql.Row mapelements_value =
mapelements_isNull ? null : (org.apache.spark.sql.Row)
mapelements_value1.apply(deserializetoobject_value);
/* 179 */ mapelements_isNull = mapelements_value == null;
/* 180 */
/* 181 */ boolean serializefromobject_isNull1 = mapelements_isNull ||
false;
/* 182 */ final boolean serializefromobject_value1 =
serializefromobject_isNull1 ? false : mapelements_value.isNullAt(0);
/* 183 */ boolean serializefromobject_isNull = false;
/* 184 */ UTF8String serializefromobject_value = null;
/* 185 */ if (!serializefromobject_isNull1 &&
serializefromobject_value1) {
/* 186 */ /* null */
/* 187 */ final UTF8String serializefromobject_value4 = null;
/* 188 */ serializefromobject_isNull = true;
/* 189 */ serializefromobject_value = serializefromobject_value4;
/* 190 */ } else {
/* 191 */ /* staticinvoke(class
org.apache.spark.unsafe.types.UTF8String, StringType, fromString,
getexternalrowfield(input[0, org.apache.spa... */
/* 192 */ /* getexternalrowfield(input[0,
org.apache.spark.sql.Row], 0, ObjectType(class java.lang.String)) */
/* 193 */ if (mapelements_isNull) {
/* 194 */ throw new RuntimeException("The input external row
cannot be null.");
/* 195 */ }
/* 196 */
/* 197 */ if (mapelements_value.isNullAt(0)) {
/* 198 */ throw new RuntimeException("The 0th field of input row
cannot be null.");
/* 199 */ }
/* 200 */
/* 201 */ final java.lang.String serializefromobject_value6 =
(java.lang.String) mapelements_value.get(0);
/* 202 */ boolean serializefromobject_isNull5 = false;
/* 203 */ final UTF8String serializefromobject_value5 =
serializefromobject_isNull5 ? null :
org.apache.spark.unsafe.types.UTF8String.fromString(serializefromobject_value6);
/* 204 */ serializefromobject_isNull5 = serializefromobject_value5
== null;
/* 205 */ serializefromobject_isNull = serializefromobject_isNull5;
/* 206 */ serializefromobject_value = serializefromobject_value5;
/* 207 */ }
/* 208 */ project_holder1.reset();
/* 209 */
/* 210 */ project_rowWriter1.zeroOutNullBytes();
/* 211 */
/* 212 */ if (serializefromobject_isNull8) {
/* 213 */ project_rowWriter1.setNullAt(0);
/* 214 */ } else {
/* 215 */ project_rowWriter1.write(0, serializefromobject_value8);
/* 216 */ }
/* 217 */
/* 218 */ if (serializefromobject_isNull) {
/* 219 */ project_rowWriter1.setNullAt(1);
/* 220 */ } else {
/* 221 */ project_rowWriter1.write(1, serializefromobject_value);
/* 222 */ }
/* 223 */ project_result1.setTotalSize(project_holder1.totalSize());
/* 224 */ append(project_result1);
/* 225 */ if (shouldStop()) return;
/* 226 */ }
/* 227 */ }
/* 228 */ }
