deniskuzZ commented on code in PR #6413:
URL: https://github.com/apache/hive/pull/6413#discussion_r3380583198
##########
ql/src/java/org/apache/hadoop/hive/ql/parse/ColumnStatsAutoGatherContext.java:
##########
@@ -274,50 +276,71 @@ private void replaceSelectOperatorProcess(SelectOperator
operator, Operator<? ex
columnExprMap.put(internalName, exprNodeDesc);
signature.add(selRSSig.get(selRSIdx));
}
+ int dynPartsCount=0;
+ if (partSpec != null) {
+ for (Map.Entry<String, String> entry : partSpec.entrySet()) {
+ if (entry.getValue() == null) {
+ dynPartsCount++;
+ }
+ }
+ }
+ boolean inputRRHasStaticParts = (this.columns.size() + dynPartsCount <
columns.size());
// if there is any partition column (in static partition or dynamic
// partition or mixed case)
- int dynamicPartBegin = -1;
+ int dynamicPartBegin = 0;
Review Comment:
can we refactor
````
for (FieldSchema column : this.columns) {
int index = tbl.getColumnIndexByName(column.getName());
ColumnInfo col = columns.get(index);
Integer selRSIdx = getSelRSColumnIndex(column.getName(), col,
columnNameToIndex);
if (selRSIdx == null) {
continue;
}
ExprNodeDesc exprNodeDesc = new ExprNodeColumnDesc(col);
colList.add(exprNodeDesc);
String internalName = selRS.getColumnNames().get(selRSIdx);
columnNames.add(internalName);
columnExprMap.put(internalName, exprNodeDesc);
signature.add(selRSSig.get(selRSIdx));
}
int dynPartsCount = 0;
if (partSpec != null) {
for (Map.Entry<String, String> entry : partSpec.entrySet()) {
if (entry.getValue() == null) {
dynPartsCount++;
}
}
}
// True when the input row already carries the static partition columns
as real columns (e.g. Iceberg),
// i.e. it has more columns than just the data columns plus the dynamic
partition columns.
boolean inputRRHasStaticParts = (this.columns.size() + dynPartsCount <
columns.size());
// Column layout produced for the stats-gathering select:
// <-- non-partition cols -->|<-- static partition cols -->|<--
dynamic partition cols -->
// For non-native tables (e.g. Iceberg) partition columns are ordinary
interleaved columns instead.
boolean dynamicPartSeen = false;
// Count of native static partition columns already emitted as
constants. They are absent from the input
// row, so each one shifts the input position of the columns that follow
it.
int staticPartShift = 0;
for (int i = 0; i < partitionColumns.size(); i++) {
String partColName = partitionColumns.get(i).getName();
int tableIndex = tbl.getColumnIndexByName(partColName);
boolean isStaticPartition = partSpec != null &&
partSpec.containsKey(partColName)
&& partSpec.get(partColName) != null;
ExprNodeDesc exprNodeDesc;
// 2. deal with static partition columns
if (isStaticPartition) {
if (dynamicPartSeen) {
throw new SemanticException(
"Dynamic partition columns should not come before static
partition columns.");
}
if (inputRRHasStaticParts) {
// non-native (e.g. Iceberg): the partition column is a real
column in the input row
exprNodeDesc = new ExprNodeColumnDesc(columns.get(tableIndex -
staticPartShift));
} else {
// native: the static partition value is a constant, not present
in the input row
exprNodeDesc = new ExprNodeConstantDesc(partSpec.get(partColName));
staticPartShift++;
}
}
// 3. dynamic partition columns: always read from the input row
else {
dynamicPartSeen = true;
exprNodeDesc = new ExprNodeColumnDesc(columns.get(tableIndex -
staticPartShift));
}
TypeInfo srcType = exprNodeDesc.getTypeInfo();
// For non-native tables partition columns are interleaved, so find
the select-RS position by name;
// for native tables it equals the table column index.
int selRSIndex = inputRRHasStaticParts ?
columnNameToIndex.get(partColName) : tableIndex;
TypeInfo destType = selRSSig.get(selRSIndex).getType();
if (!srcType.equals(destType)) {
// This may be possible when srcType is string but destType is
integer
exprNodeDesc = ExprNodeTypeCheck.getExprNodeDefaultExprProcessor()
.createConversionCast(exprNodeDesc, (PrimitiveTypeInfo)
destType);
}
colList.add(exprNodeDesc);
String internalName = selRS.getColumnNames().get(selRSIndex);
columnNames.add(internalName);
columnExprMap.put(internalName, exprNodeDesc);
signature.add(selRSSig.get(selRSIndex));
}
````
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