public LSMBTreeTestWorker(
DataGenThread dataGen, TestOperationSelector opSelector, IIndex index, int numBatches)
throws HyracksDataException {
super(dataGen, opSelector, index, numBatches);
lsmBTree = (LSMBTree) index;
numKeyFields = lsmBTree.getComparatorFactories().length;
deleteTb = new ArrayTupleBuilder(numKeyFields);
}
@Override
public void performOp(ITupleReference tuple, TestOperation op)
throws HyracksDataException, IndexException {
LSMBTreeAccessor accessor = (LSMBTreeAccessor) indexAccessor;
IIndexCursor searchCursor = accessor.createSearchCursor(false);
MultiComparator cmp = accessor.getMultiComparator();
RangePredicate rangePred = new RangePredicate(tuple, tuple, true, true, cmp, cmp);
switch (op) {
case INSERT:
try {
accessor.insert(tuple);
} catch (TreeIndexDuplicateKeyException e) {
// Ignore duplicate keys, since we get random tuples.
}
break;
case DELETE:
// Create a tuple reference with only key fields.
deleteTb.reset();
for (int i = 0; i < numKeyFields; i++) {
deleteTb.addField(tuple.getFieldData(i), tuple.getFieldStart(i), tuple.getFieldLength(i));
}
deleteTuple.reset(deleteTb.getFieldEndOffsets(), deleteTb.getByteArray());
try {
accessor.delete(deleteTuple);
} catch (TreeIndexNonExistentKeyException e) {
// Ignore non-existant keys, since we get random tuples.
}
break;
case UPDATE:
try {
accessor.update(tuple);
} catch (TreeIndexNonExistentKeyException e) {
// Ignore non-existant keys, since we get random tuples.
} catch (BTreeNotUpdateableException e) {
// Ignore not updateable exception due to numKeys == numFields.
}
break;
case POINT_SEARCH:
searchCursor.reset();
rangePred.setLowKey(tuple, true);
rangePred.setHighKey(tuple, true);
accessor.search(searchCursor, rangePred);
consumeCursorTuples(searchCursor);
break;
case SCAN:
searchCursor.reset();
rangePred.setLowKey(null, true);
rangePred.setHighKey(null, true);
accessor.search(searchCursor, rangePred);
consumeCursorTuples(searchCursor);
break;
case MERGE:
accessor.scheduleMerge(NoOpIOOperationCallback.INSTANCE, lsmBTree.getImmutableComponents());
break;
default:
throw new HyracksDataException("Op " + op.toString() + " not supported.");
}
}
