diff --git a/src/frontend/src/instance/log_handler.rs b/src/frontend/src/instance/log_handler.rs
index 26e37498e591..ecc22b4935ec 100644
--- a/src/frontend/src/instance/log_handler.rs
+++ b/src/frontend/src/instance/log_handler.rs
@@ -66,6 +66,7 @@ impl LogHandler for Instance {
     }
 
     async fn delete_pipeline(&self, _name: &str, _query_ctx: QueryContextRef) -> ServerResult<()> {
+        // todo(qtang): impl delete
         todo!("delete_pipeline")
     }
 }
diff --git a/src/pipeline/src/mng/pipeline_operator.rs b/src/pipeline/src/mng/pipeline_operator.rs
index f137cdfd769f..8540fa797be6 100644
--- a/src/pipeline/src/mng/pipeline_operator.rs
+++ b/src/pipeline/src/mng/pipeline_operator.rs
@@ -48,7 +48,7 @@ impl PipelineOperator {
             catalog_name: catalog.to_string(),
             schema_name: DEFAULT_PRIVATE_SCHEMA_NAME.to_string(),
             table_name: PIPELINE_TABLE_NAME.to_string(),
-            desc: "GreptimeDB scripts table for Python".to_string(),
+            desc: "GreptimeDB pipeline table for Log".to_string(),
             column_defs,
             time_index,
             primary_keys,
diff --git a/src/pipeline/src/mng/table.rs b/src/pipeline/src/mng/table.rs
index b7574238f569..040924f799de 100644
--- a/src/pipeline/src/mng/table.rs
+++ b/src/pipeline/src/mng/table.rs
@@ -80,7 +80,6 @@ impl PipelineTable {
         let content_type = "content_type";
         let pipeline_content = "pipeline";
         let created_at = "created_at";
-        let updated_at = "updated_at";
 
         (
             created_at.to_string(),
@@ -135,15 +134,6 @@ impl PipelineTable {
                     comment: "".to_string(),
                     datatype_extension: None,
                 },
-                ColumnDef {
-                    name: updated_at.to_string(),
-                    data_type: ColumnDataType::TimestampMillisecond as i32,
-                    is_nullable: false,
-                    default_constraint: vec![],
-                    semantic_type: SemanticType::Field as i32,
-                    comment: "".to_string(),
-                    datatype_extension: None,
-                },
             ],
         )
     }
@@ -180,12 +170,6 @@ impl PipelineTable {
                 semantic_type: SemanticType::Timestamp.into(),
                 ..Default::default()
             },
-            PbColumnSchema {
-                column_name: "updated_at".to_string(),
-                datatype: ColumnDataType::TimestampMillisecond.into(),
-                semantic_type: SemanticType::Field.into(),
-                ..Default::default()
-            },
         ]
     }
 
@@ -241,7 +225,6 @@ impl PipelineTable {
                         ValueData::StringValue(content_type.to_string()).into(),
                         ValueData::StringValue(pipeline.to_string()).into(),
                         ValueData::TimestampMillisecondValue(now).into(),
-                        ValueData::TimestampMillisecondValue(now).into(),
                     ],
                 }],
             }),
@@ -350,24 +333,26 @@ impl PipelineTable {
             .context(CollectRecordsSnafu)?;
 
         ensure!(!records.is_empty(), PipelineNotFoundSnafu { name });
+        // assume schema + name is unique for now
+        ensure!(
+            records.len() == 1 && records[0].num_columns() == 1,
+            PipelineNotFoundSnafu { name }
+        );
 
-        assert_eq!(records.len(), 1);
-        assert_eq!(records[0].num_columns(), 1);
-
-        let script_column = records[0].column(0);
-        let script_column = script_column
+        let pipeline_column = records[0].column(0);
+        let pipeline_column = pipeline_column
             .as_any()
             .downcast_ref::<StringVector>()
             .with_context(|| CastTypeSnafu {
                 msg: format!(
                     "can't downcast {:?} array into string vector",
-                    script_column.data_type()
+                    pipeline_column.data_type()
                 ),
             })?;
 
-        assert_eq!(script_column.len(), 1);
+        ensure!(pipeline_column.len() == 1, PipelineNotFoundSnafu { name });
 
         // Safety: asserted above
-        Ok(script_column.get_data(0).unwrap().to_string())
+        Ok(pipeline_column.get_data(0).unwrap().to_string())
     }
 }
diff --git a/src/servers/src/http/event.rs b/src/servers/src/http/event.rs
index 4d1ebe2e2172..a08688b55309 100644
--- a/src/servers/src/http/event.rs
+++ b/src/servers/src/http/event.rs
@@ -17,10 +17,8 @@ use std::collections::HashMap;
 use api::v1::{RowInsertRequest, RowInsertRequests, Rows};
 use axum::extract::{Json, Query, State};
 use axum::headers::ContentType;
-use axum::Extension;
-use common_telemetry::{error, info};
-use headers::HeaderMapExt;
-use http::HeaderMap;
+use axum::{Extension, TypedHeader};
+use common_telemetry::error;
 use mime_guess::mime;
 use pipeline::error::{CastTypeSnafu, ExecPipelineSnafu};
 use pipeline::Value as PipelineValue;
@@ -75,17 +73,9 @@ pub async fn log_ingester(
     State(handler): State<LogHandlerRef>,
     Query(query_params): Query<LogIngesterQueryParams>,
     Extension(query_ctx): Extension<QueryContextRef>,
-    // TypedHeader(content_type): TypedHeader<ContentType>,
-    headers: HeaderMap,
+    TypedHeader(content_type): TypedHeader<ContentType>,
     payload: String,
 ) -> Result<HttpResponse> {
-    // TODO(shuiyisong): remove debug log
-    info!("[log_header]: {:?}", headers);
-    info!("[log_payload]: {:?}", payload);
-    let content_type = headers
-        .typed_get::<ContentType>()
-        .unwrap_or(ContentType::text());
-
     let pipeline_name = query_params.pipeline_name.context(InvalidParameterSnafu {
         reason: "pipeline_name is required",
     })?;
@@ -97,9 +87,6 @@ pub async fn log_ingester(
     let value = match m.subtype() {
         // TODO (qtang): we should decide json or jsonl
         mime::JSON => serde_json::from_str(&payload).context(ParseJsonSnafu)?,
-        // TODO (qtang): we should decide which content type to support
-        // form_url_cncoded type is only placeholder
-        mime::WWW_FORM_URLENCODED => parse_space_separated_log(payload)?,
         // add more content type support
         _ => UnsupportedContentTypeSnafu { content_type }.fail()?,
     };
@@ -107,13 +94,6 @@ pub async fn log_ingester(
     log_ingester_inner(handler, pipeline_name, table_name, value, query_ctx).await
 }
 
-fn parse_space_separated_log(payload: String) -> Result<Value> {
-    // ToStructuredLogSnafu
-    let _log = payload.split_whitespace().collect::<Vec<&str>>();
-    // TODO (qtang): implement this
-    todo!()
-}
-
 async fn log_ingester_inner(
     state: LogHandlerRef,
     pipeline_name: String,