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Fix index push down #697

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merged 8 commits into from May 8, 2019
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ignore test for issue#701

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birdstorm committed May 8, 2019
commit a977150e5adefc7f7b68094f792815bc19a8ed99
@@ -69,7 +69,11 @@ object StatisticsHelper {
neededColIds: mutable.ArrayBuffer[Long],
histTable: TiTableInfo): StatisticsDTO = {
if (row.fieldCount() < 6) return null
assert(row.getLong(0) == table.getId, s"table id not match ${row.getLong(0)}!=${table.getId}")
if (row.getLong(0) != table.getId) {
// table id should be the same as what we fetched via coprocessor
logger.warn(s"table id not match ${row.getLong(0)}!=${table.getId}")
return null
}
val isIndex = row.getLong(1) > 0
val histID = row.getLong(2)
val distinct = row.getLong(3)
@@ -44,7 +44,8 @@ class PartitionTableSuite extends BaseTiSparkSuite {
judge("select * from t2 where c1 = 2")
}

test("index scan on partition table") {
// FIXME: https://github.com/pingcap/tispark/issues/701
ignore("index scan on partition table") {
enablePartitionForTiDB()
tidbStmt.execute(
"CREATE TABLE `p_t` ( `id` int(11) DEFAULT NULL, `y` date DEFAULT NULL, index `idx_y`(`y`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin PARTITION BY RANGE ( id ) ( PARTITION p0 VALUES LESS THAN (2), PARTITION p1 VALUES LESS THAN (4), PARTITION p2 VALUES LESS THAN (6) );"
@@ -21,7 +21,7 @@
import com.pingcap.tikv.predicates.IndexRange;
import org.tikv.kvproto.Coprocessor.KeyRange;

// IndexScanKeyRangeBuilder accepts a table id, a index info, and a index range.
// IndexScanKeyRangeBuilder accepts a table id, an index info, and an index range.
// With these info, it can build a key range which can be used for index scan.
// TODO: more refactoring on the way
public class IndexScanKeyRangeBuilder extends KeyRangeBuilder {
@@ -19,6 +19,9 @@
import com.google.common.collect.Range;
import com.pingcap.tikv.predicates.IndexRange;

// An abstract class that computes key range from IndexRange
// After computing lower and upper boundaries, the builder should
// build a key range according to its own rules.
abstract class KeyRangeBuilder {

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@zhexuany

zhexuany May 8, 2019

Member

it is better to include some comments.


private final IndexRange ir;
@@ -18,6 +18,7 @@
import com.pingcap.tikv.predicates.IndexRange;
import com.pingcap.tikv.util.Pair;

// A builder to build key range for Statistics keys
public class StatisticsKeyRangeBuilder extends KeyRangeBuilder {

public StatisticsKeyRangeBuilder(IndexRange ir) {
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