fix: Fix flaky caleWriterLocalPartitionTest.unpartitionBasic (#11788)

Summary:
Pull Request resolved: #11788

Fix flaky caleWriterLocalPartitionTest.unpartitionBasic witb more input data

Reviewed By: tanjialiang

Differential Revision: D66918241

fbshipit-source-id: f000c456949a4aa66a0864194ea07360f95091a9

velox/exec/tests/ScaleWriterLocalPartitionTest.cpp

@@ -552,7 +552,7 @@ class ScaleWriterLocalPartitionTest : public HiveConnectorTestBase {
 };
 
 TEST_F(ScaleWriterLocalPartitionTest, unpartitionBasic) {
-  const std::vector<RowVectorPtr> inputVectors = makeVectors(32, 1024);
+  const std::vector<RowVectorPtr> inputVectors = makeVectors(128, 1024);
   const uint64_t queryCapacity = 256 << 20;
   const uint32_t maxDrivers = 32;
   const uint32_t maxExchanegBufferSize = 2 << 20;