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Fix TiFlash overflow (#2740) #2743

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merged 3 commits into from
Aug 2, 2023
Merged

Fix TiFlash overflow (#2740) #2743

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7df1f85
This is an automated cherry-pick of #2740
shiyuhang0 Aug 1, 2023
3c8fb76
Update TiBlockColumnVector.java
shiyuhang0 Aug 1, 2023
df555cf
fmt
shiyuhang0 Aug 2, 2023
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27 changes: 27 additions & 0 deletions core/src/test/scala/org/apache/spark/sql/IssueTestSuite.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,33 @@ import org.apache.spark.sql.functions.{col, sum}

class IssueTestSuite extends BaseTiSparkTest {

test("test tiflash overflow in unsigned bigint") {
if (!enableTiFlashTest) {
cancel("tiflash test not enabled")
}
val dbTable = "tispark_test.tiflash_overflow"
tidbStmt.execute(s"drop table if exists $dbTable")
tidbStmt.execute(
s"CREATE TABLE $dbTable (`a` bigint(20) UNSIGNED NOT NULL,`b` bigint(20) UNSIGNED NOT NULL)")
tidbStmt.execute(s"insert into $dbTable values(16717361816800086255, 16717361816800086255)")
tidbStmt.execute(s"ALTER TABLE $dbTable SET TIFLASH REPLICA 1")

Thread.sleep(5 * 1000)

val prev = spark.conf.getOption(TiConfigConst.ISOLATION_READ_ENGINES)
try {
spark.conf
.set(TiConfigConst.ISOLATION_READ_ENGINES, TiConfigConst.TIFLASH_STORAGE_ENGINE)
val df = spark.sql(s"select * from $dbTable")
val row = Row(BigDecimal("16717361816800086255"), BigDecimal("16717361816800086255"))
checkAnswer(df, Seq(row))
} finally {
spark.conf.set(
TiConfigConst.ISOLATION_READ_ENGINES,
prev.getOrElse(TiConfigConst.DEFAULT_STORAGE_ENGINES))
}
}

test("test issue 2649") {
val dbTable = "tispark_test.mutil_uniq"
tidbStmt.execute(s"drop table if exists $dbTable")
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6 changes: 6 additions & 0 deletions tikv-client/src/main/java/com/pingcap/tikv/columnar/TiBlockColumnVector.java
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Original file line number Diff line number Diff line change
Expand Up @@ -18,13 +18,15 @@

import static com.pingcap.tikv.util.MemoryUtil.EMPTY_BYTE_BUFFER_DIRECT;

import com.google.common.primitives.UnsignedLong;
import com.pingcap.tikv.ExtendedDateTime;
import com.pingcap.tikv.codec.Codec.DateCodec;
import com.pingcap.tikv.codec.Codec.DateTimeCodec;
import com.pingcap.tikv.columnar.datatypes.CHType;
import com.pingcap.tikv.types.AbstractDateTimeType;
import com.pingcap.tikv.types.BytesType;
import com.pingcap.tikv.types.DateType;
import com.pingcap.tikv.types.DecimalType;
import com.pingcap.tikv.util.MemoryUtil;
import java.math.BigDecimal;
import java.nio.ByteBuffer;
Expand Down Expand Up @@ -240,6 +242,10 @@ public double getDouble(int rowId) {
@Override
public BigDecimal getDecimal(int rowId, int precision, int scale) {
long rowIdAddr = (long) rowId * fixedLength + dataAddr;
// avoid unsigned long overflow here
if (type == DecimalType.BIG_INT_DECIMAL) {
return new BigDecimal(UnsignedLong.fromLongBits(this.getLong(rowId)).bigIntegerValue());
}
if (fixedLength == 4) {
return MemoryUtil.getDecimal32(rowIdAddr, scale);
} else if (fixedLength == 8) {
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