@Override
public void process(Object row, int tag) throws HiveException {
try {
VectorizedRowBatch batch = (VectorizedRowBatch) row;
alias = (byte) tag;
if (needCommonSetup) {
// Our one time process method initialization.
commonSetup(batch);
/*
* Initialize Multi-Key members for this specialized class.
*/
keyVectorSerializeWrite =
new VectorSerializeRow(new BinarySortableSerializeWrite(bigTableKeyColumnMap.length));
keyVectorSerializeWrite.init(bigTableKeyTypeInfos, bigTableKeyColumnMap);
currentKeyOutput = new Output();
saveKeyOutput = new Output();
needCommonSetup = false;
}
if (needHashTableSetup) {
// Setup our hash table specialization. It will be the first time the process
// method is called, or after a Hybrid Grace reload.
/*
* Get our Multi-Key hash map information for this specialized class.
*/
hashMap = (VectorMapJoinBytesHashMap) vectorMapJoinHashTable;
needHashTableSetup = false;
}
batchCounter++;
final int inputLogicalSize = batch.size;
if (inputLogicalSize == 0) {
if (isLogDebugEnabled) {
LOG.debug(CLASS_NAME + " batch #" + batchCounter + " empty");
}
return;
}
// Do the per-batch setup for an outer join.
outerPerBatchSetup(batch);
// For outer join, remember our input rows before ON expression filtering or before
// hash table matching so we can generate results for all rows (matching and non matching)
// later.
boolean inputSelectedInUse = batch.selectedInUse;
if (inputSelectedInUse) {
// if (!verifyMonotonicallyIncreasing(batch.selected, batch.size)) {
// throw new HiveException("batch.selected is not in sort order and unique");
// }
System.arraycopy(batch.selected, 0, inputSelected, 0, inputLogicalSize);
}
// Filtering for outer join just removes rows available for hash table matching.
boolean someRowsFilteredOut = false;
if (bigTableFilterExpressions.length > 0) {
// Since the input
for (VectorExpression ve : bigTableFilterExpressions) {
ve.evaluate(batch);
}
someRowsFilteredOut = (batch.size != inputLogicalSize);
if (isLogDebugEnabled) {
if (batch.selectedInUse) {
if (inputSelectedInUse) {
LOG.debug(
CLASS_NAME
+ " inputSelected "
+ intArrayToRangesString(inputSelected, inputLogicalSize)
+ " filtered batch.selected "
+ intArrayToRangesString(batch.selected, batch.size));
} else {
LOG.debug(
CLASS_NAME
+ " inputLogicalSize "
+ inputLogicalSize
+ " filtered batch.selected "
+ intArrayToRangesString(batch.selected, batch.size));
}
}
}
}
// Perform any key expressions. Results will go into scratch columns.
if (bigTableKeyExpressions != null) {
for (VectorExpression ve : bigTableKeyExpressions) {
ve.evaluate(batch);
}
}
/*
* Multi-Key specific declarations.
*/
// None.
/*
* Multi-Key Long check for repeating.
*/
// If all BigTable input columns to key expressions are isRepeating, then
// calculate key once; lookup once.
// Also determine if any nulls are present since for a join that means no match.
boolean allKeyInputColumnsRepeating;
boolean someKeyInputColumnIsNull =
false; // Only valid if allKeyInputColumnsRepeating is true.
if (bigTableKeyColumnMap.length == 0) {
allKeyInputColumnsRepeating = false;
} else {
allKeyInputColumnsRepeating = true;
for (int i = 0; i < bigTableKeyColumnMap.length; i++) {
ColumnVector colVector = batch.cols[bigTableKeyColumnMap[i]];
if (!colVector.isRepeating) {
allKeyInputColumnsRepeating = false;
break;
}
if (!colVector.noNulls && colVector.isNull[0]) {
someKeyInputColumnIsNull = true;
}
}
}
if (allKeyInputColumnsRepeating) {
/*
* Repeating.
*/
// All key input columns are repeating. Generate key once. Lookup once.
// Since the key is repeated, we must use entry 0 regardless of selectedInUse.
/*
* Multi-Key specific repeated lookup.
*/
JoinUtil.JoinResult joinResult;
if (batch.size == 0) {
// Whole repeated key batch was filtered out.
joinResult = JoinUtil.JoinResult.NOMATCH;
} else if (someKeyInputColumnIsNull) {
// Any (repeated) null key column is no match for whole batch.
joinResult = JoinUtil.JoinResult.NOMATCH;
} else {
// All key input columns are repeating. Generate key once. Lookup once.
keyVectorSerializeWrite.setOutput(currentKeyOutput);
keyVectorSerializeWrite.serializeWrite(batch, 0);
byte[] keyBytes = currentKeyOutput.getData();
int keyLength = currentKeyOutput.getLength();
joinResult = hashMap.lookup(keyBytes, 0, keyLength, hashMapResults[0]);
}
/*
* Common repeated join result processing.
*/
if (isLogDebugEnabled) {
LOG.debug(
CLASS_NAME + " batch #" + batchCounter + " repeated joinResult " + joinResult.name());
}
finishOuterRepeated(
batch,
joinResult,
hashMapResults[0],
someRowsFilteredOut,
inputSelectedInUse,
inputLogicalSize);
} else {
/*
* NOT Repeating.
*/
if (isLogDebugEnabled) {
LOG.debug(CLASS_NAME + " batch #" + batchCounter + " non-repeated");
}
int selected[] = batch.selected;
boolean selectedInUse = batch.selectedInUse;
int hashMapResultCount = 0;
int allMatchCount = 0;
int equalKeySeriesCount = 0;
int spillCount = 0;
boolean atLeastOneNonMatch = someRowsFilteredOut;
/*
* Multi-Key specific variables.
*/
Output temp;
// We optimize performance by only looking up the first key in a series of equal keys.
boolean haveSaveKey = false;
JoinUtil.JoinResult saveJoinResult = JoinUtil.JoinResult.NOMATCH;
// Logical loop over the rows in the batch since the batch may have selected in use.
for (int logical = 0; logical < batch.size; logical++) {
int batchIndex = (selectedInUse ? selected[logical] : logical);
// VectorizedBatchUtil.debugDisplayOneRow(batch, batchIndex, taskName + ", " +
// getOperatorId() + " candidate " + CLASS_NAME + " batch");
/*
* Multi-Key outer null detection.
*/
// Generate binary sortable key for current row in vectorized row batch.
keyVectorSerializeWrite.setOutput(currentKeyOutput);
keyVectorSerializeWrite.serializeWrite(batch, batchIndex);
if (keyVectorSerializeWrite.getHasAnyNulls()) {
// Have that the NULL does not interfere with the current equal key series, if there
// is one. We do not set saveJoinResult.
//
// Let a current MATCH equal key series keep going, or
// Let a current SPILL equal key series keep going, or
// Let a current NOMATCH keep not matching.
atLeastOneNonMatch = true;
// LOG.debug(CLASS_NAME + " logical " + logical + " batchIndex " + batchIndex + "
// NULL");
} else {
/*
* Multi-Key outer get key.
*/
// Generated earlier to get possible null(s).
/*
* Equal key series checking.
*/
if (!haveSaveKey || !saveKeyOutput.arraysEquals(currentKeyOutput)) {
// New key.
if (haveSaveKey) {
// Move on with our counts.
switch (saveJoinResult) {
case MATCH:
hashMapResultCount++;
equalKeySeriesCount++;
break;
case SPILL:
hashMapResultCount++;
break;
case NOMATCH:
break;
}
}
// Regardless of our matching result, we keep that information to make multiple use
// of it for a possible series of equal keys.
haveSaveKey = true;
/*
* Multi-Key specific save key.
*/
temp = saveKeyOutput;
saveKeyOutput = currentKeyOutput;
currentKeyOutput = temp;
/*
* Multi-Key specific lookup key.
*/
byte[] keyBytes = saveKeyOutput.getData();
int keyLength = saveKeyOutput.getLength();
saveJoinResult =
hashMap.lookup(keyBytes, 0, keyLength, hashMapResults[hashMapResultCount]);
/*
* Common outer join result processing.
*/
switch (saveJoinResult) {
case MATCH:
equalKeySeriesHashMapResultIndices[equalKeySeriesCount] = hashMapResultCount;
equalKeySeriesAllMatchIndices[equalKeySeriesCount] = allMatchCount;
equalKeySeriesIsSingleValue[equalKeySeriesCount] =
hashMapResults[hashMapResultCount].isSingleRow();
equalKeySeriesDuplicateCounts[equalKeySeriesCount] = 1;
allMatchs[allMatchCount++] = batchIndex;
// VectorizedBatchUtil.debugDisplayOneRow(batch, batchIndex, CLASS_NAME + " MATCH
// isSingleValue " + equalKeySeriesIsSingleValue[equalKeySeriesCount] + "
// currentKey " + currentKey);
break;
case SPILL:
spills[spillCount] = batchIndex;
spillHashMapResultIndices[spillCount] = hashMapResultCount;
spillCount++;
break;
case NOMATCH:
atLeastOneNonMatch = true;
// VectorizedBatchUtil.debugDisplayOneRow(batch, batchIndex, CLASS_NAME + "
// NOMATCH" + " currentKey " + currentKey);
break;
}
} else {
// LOG.debug(CLASS_NAME + " logical " + logical + " batchIndex " + batchIndex + " Key
// Continues " + saveKey + " " + saveJoinResult.name());
// Series of equal keys.
switch (saveJoinResult) {
case MATCH:
equalKeySeriesDuplicateCounts[equalKeySeriesCount]++;
allMatchs[allMatchCount++] = batchIndex;
// VectorizedBatchUtil.debugDisplayOneRow(batch, batchIndex, CLASS_NAME + " MATCH
// duplicate");
break;
case SPILL:
spills[spillCount] = batchIndex;
spillHashMapResultIndices[spillCount] = hashMapResultCount;
spillCount++;
break;
case NOMATCH:
// VectorizedBatchUtil.debugDisplayOneRow(batch, batchIndex, CLASS_NAME + "
// NOMATCH duplicate");
break;
}
}
// if (!verifyMonotonicallyIncreasing(allMatchs, allMatchCount)) {
// throw new HiveException("allMatchs is not in sort order and unique");
// }
}
}
if (haveSaveKey) {
// Update our counts for the last key.
switch (saveJoinResult) {
case MATCH:
hashMapResultCount++;
equalKeySeriesCount++;
break;
case SPILL:
hashMapResultCount++;
break;
case NOMATCH:
break;
}
}
if (isLogDebugEnabled) {
LOG.debug(
CLASS_NAME
+ " batch #"
+ batchCounter
+ " allMatchs "
+ intArrayToRangesString(allMatchs, allMatchCount)
+ " equalKeySeriesHashMapResultIndices "
+ intArrayToRangesString(equalKeySeriesHashMapResultIndices, equalKeySeriesCount)
+ " equalKeySeriesAllMatchIndices "
+ intArrayToRangesString(equalKeySeriesAllMatchIndices, equalKeySeriesCount)
+ " equalKeySeriesIsSingleValue "
+ Arrays.toString(
Arrays.copyOfRange(equalKeySeriesIsSingleValue, 0, equalKeySeriesCount))
+ " equalKeySeriesDuplicateCounts "
+ Arrays.toString(
Arrays.copyOfRange(equalKeySeriesDuplicateCounts, 0, equalKeySeriesCount))
+ " atLeastOneNonMatch "
+ atLeastOneNonMatch
+ " inputSelectedInUse "
+ inputSelectedInUse
+ " inputLogicalSize "
+ inputLogicalSize
+ " spills "
+ intArrayToRangesString(spills, spillCount)
+ " spillHashMapResultIndices "
+ intArrayToRangesString(spillHashMapResultIndices, spillCount)
+ " hashMapResults "
+ Arrays.toString(Arrays.copyOfRange(hashMapResults, 0, hashMapResultCount)));
}
// We will generate results for all matching and non-matching rows.
finishOuter(
batch,
allMatchCount,
equalKeySeriesCount,
atLeastOneNonMatch,
inputSelectedInUse,
inputLogicalSize,
spillCount,
hashMapResultCount);
}
if (batch.size > 0) {
// Forward any remaining selected rows.
forwardBigTableBatch(batch);
}
} catch (IOException e) {
throw new HiveException(e);
} catch (Exception e) {
throw new HiveException(e);
}
}
