Merge pull request #81 from marancibia/main

Update Oracle Delta Sharing CDF.ipynb

Author: jpmc-github

delta-sharing/change-data-feed/Oracle Delta Sharing CDF.ipynb

@@ -18,14 +18,6 @@
     "This notebook reads **Change Data Feed (CDF)** from an Oracle Autonomous Database\n",
     "that publishes a Delta Sharing endpoint, and displays the raw change rows.\n",
     "\n",
-    "## Why a custom REST approach?\n",
-    "\n",
-    "| Problem | Root cause | Workaround |\n",
-    "|---|---|---|\n",
-    "| `spark.read.format(\"deltaSharing\")` throws `InvocationTargetException` | Spark's Java Delta Sharing connector is incompatible with Oracle endpoints on serverless compute | Use the Python `delta_sharing` REST client instead |\n",
-    "| `load_table_changes_as_pandas()` throws `KeyError: '_commit_timestamp'` | Oracle's file-level CDF omits the `_commit_timestamp` column that the library expects | Call the REST API directly and parse with `DeltaSharingReader._to_pandas()` |\n",
-    "| `spark.read.parquet(*urls)` throws `UNSUPPORTED_FILE_SYSTEM` | Spark can't read HTTPS pre-signed URLs from Oracle object storage | Download via HTTP with `_to_pandas()`, then convert to Spark DataFrame |\n",
-    "\n",
     "## Oracle's file-level CDF\n",
     "\n",
     "Oracle implements CDF at the **file level**, not the row level. When *any* row in a\n",
@@ -247,4 +239,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 0
-}
+}