It seems like the problem here is that we are not using unique names
for mapelements_isNull?
On Tue, May 17, 2016 at 3:29 PM, Koert Kuipers <ko...@tresata.com> wrote:
> 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 */ }
>
