Add warning log to EvictionQueue::Purge for slow purge detection

.github/workflows/Main.yml

@@ -385,6 +385,12 @@ jobs:
       run: |
         ./build/release/test/unittest --test-config test/configs/block_size_16kB.json
 
+    - name: test/configs/adaptive_segment_allocation.json
+      if: success() || failure()
+      shell: bash
+      run: |
+        python3 scripts/ci/run_tests.py --test-config=test/configs/adaptive_segment_allocation.json ./build/release/test/unittest
+
     - name: test/configs/latest_storage_block_size_16kB.json
       if: (success() || failure()) && steps.build.conclusion == 'success'
       shell: bash

src/common/settings.json

@@ -15,6 +15,13 @@
             "set"
         ]
     },
+    {
+        "name": "adaptive_segment_allocation",
+        "description": "When enabled, transient column segments start small and double in size with each overflow, up to the block size",
+        "type": "BOOLEAN",
+        "default_scope": "global",
+        "default_value": "false"
+    },
     {
         "name": "allocator_background_threads",
         "description": "Whether to enable the allocator background thread.",
@@ -735,6 +742,13 @@
             "set"
         ]
     },
+    {
+        "name": "initial_segment_rows",
+        "description": "Number of rows allocated for the first transient column segment when adaptive_segment_allocation is enabled. Subsequent segments double this until reaching the block size.",
+        "type": "UBIGINT",
+        "default_scope": "global",
+        "default_value": "2048"
+    },
     {
         "name": "integer_division",
         "description": "Whether or not the / operator defaults to integer division, or to floating point division",