diff --git a/src/backend/utils/mmgr/aset.c b/src/backend/utils/mmgr/aset.c
index 2fe36c7505b..888d598cc5e 100644
--- a/src/backend/utils/mmgr/aset.c
+++ b/src/backend/utils/mmgr/aset.c
@@ -412,6 +412,19 @@ AllocSetContextCreateInternal(MemoryContext parent,
 			freelist->first_free = (AllocSet) set->header.nextchild;
 			freelist->num_free--;
 
+			if (set->maxBlockSize != maxBlockSize)
+			{
+				Size		expectedChunkLimit = ALLOC_CHUNK_LIMIT;
+
+				while (expectedChunkLimit + ALLOC_CHUNKHDRSZ >
+					   (maxBlockSize - ALLOC_BLOCKHDRSZ) / ALLOC_CHUNK_FRACTION)
+					expectedChunkLimit >>= 1;
+
+				elog(LOG, "EVAN: recycling AllocSet context \"%s\": maxBlockSize %zu -> %zu, allocChunkLimit retained %zu, expected %zu",
+					 name, (Size) set->maxBlockSize, maxBlockSize,
+					 (Size) set->allocChunkLimit, expectedChunkLimit);
+			}
+
 			/* Update its maxBlockSize; everything else should be OK */
 			set->maxBlockSize = maxBlockSize;