[DRILL-3954] HBase tests use only 1 region, don't detect bug(s) in dummy-column NullableIntVector creation/resolution

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: Storage - HBase
• Assignee: Unassigned
• Reporter: Daniel Barclay
• Created: 19/Oct/15 23:37
• Updated: 01/Nov/15 04:13

Description

Currently, the HBase tests (e.g., TestHBaseFilterPushDown) use only one region.

That causes them to miss detecting a bug in creating and/or resolving dummy fields (NullableIntVectors for referenced but non-existent fields) somewhere between reading from HBase and wherever dummy fields are supposed to be get resolved (or maybe two separate bugs).

Reproduction:

In HBaseTestsSuite, change the line:

            UTIL.startMiniHBaseCluster(1, 1);

to:

            UTIL.startMiniHBaseCluster(1, 3);

and change the line:

    TestTableGenerator.generateHBaseDataset1(admin, TEST_TABLE_1, 1);

to:

    TestTableGenerator.generateHBaseDataset1(admin, TEST_TABLE_1, 3);

.

Run unit test class TestHBaseFilterPushDown.

Depending on which region gets processed first (it's non-deteministic), test methods testFilterPushDownOrRowKeyEqualRangePred and
testFilterPushDownMultiColumns get exceptions like this:

java.lang.IndexOutOfBoundsException: index: 0, length: 1 (expected: range(0, 0))
	at io.netty.buffer.DrillBuf.checkIndexD(DrillBuf.java:189)
	at io.netty.buffer.DrillBuf.chk(DrillBuf.java:211)
	at io.netty.buffer.DrillBuf.getByte(DrillBuf.java:746)
	at org.apache.drill.exec.vector.UInt1Vector$Accessor.get(UInt1Vector.java:364)
	at org.apache.drill.exec.vector.NullableVarBinaryVector$Accessor.isSet(NullableVarBinaryVector.java:391)
	at org.apache.drill.exec.vector.NullableVarBinaryVector$Accessor.isNull(NullableVarBinaryVector.java:387)
	at org.apache.drill.exec.vector.NullableVarBinaryVector$Accessor.getObject(NullableVarBinaryVector.java:411)
	at org.apache.drill.exec.vector.NullableVarBinaryVector$Accessor.getObject(NullableVarBinaryVector.java:1)
	at org.apache.drill.exec.vector.complex.MapVector$Accessor.getObject(MapVector.java:313)
	at org.apache.drill.exec.util.VectorUtil.showVectorAccessibleContent(VectorUtil.java:166)
	at org.apache.drill.BaseTestQuery.printResult(BaseTestQuery.java:487)
	at org.apache.drill.hbase.BaseHBaseTest.printResultAndVerifyRowCount(BaseHBaseTest.java:95)
	at org.apache.drill.hbase.BaseHBaseTest.runHBaseSQLVerifyCount(BaseHBaseTest.java:91)
	at org.apache.drill.hbase.TestHBaseFilterPushDown.testFilterPushDownMultiColumns(TestHBaseFilterPushDown.java:592)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at java.lang.reflect.Method.invoke(Method.java:606)

See DRILL-3955.

Issue Links

• is related to: DRILL-3955 Possible bug in creation of Drill columns for HBase column families
• relates to: DRILL-3955 Possible bug in creation of Drill columns for HBase column families
• relates to: DRILL-2288 ScanBatch violates IterOutcome protocol for zero-row sources [was: missing JDBC metadata (schema) for 0-row results...]