Add comments.

1 files changed, 3 insertions, 0 deletions

diff --git a/searchlib/src/tests/attribute/compaction/attribute_compaction_test.cpp b/searchlib/src/tests/attribute/compaction/attribute_compaction_test.cpp
index 3a4446b4cb2..03b5931c6b9 100644
--- a/searchlib/src/tests/attribute/compaction/attribute_compaction_test.cpp
+++ b/searchlib/src/tests/attribute/compaction/attribute_compaction_test.cpp
@@ -175,6 +175,8 @@ TEST_F("Test that no compaction of int8 array attribute increases address space
     f.populate(range1, 1000);
     f.hammer(range2, 101);
     AddressSpace afterSpace = f.getMultiValueAddressSpaceUsage("after");
+    // 100 * 1000 dead clusters due to new values for docids
+    // 1 reserved cluster accounted as dead
     EXPECT_EQUAL(100001, afterSpace.dead());
 }
 
@@ -185,6 +187,7 @@ TEST_F("Test that compaction of int8 array attribute limits address space usage"
     f.populate(range1, 1000);
     f.hammer(range2, 101);
     AddressSpace afterSpace = f.getMultiValueAddressSpaceUsage("after");
+    // DEAD_CLUSTERS_SLACK in multi value mapping is is 64k
     EXPECT_GREATER(65536, afterSpace.dead());
 }