From 3054574bc1020012713a3da63d79fccbb8339d57 Mon Sep 17 00:00:00 2001
From: Kaijie Chen <ckj@apache.org>
Date: Thu, 8 Jun 2023 17:40:02 +0800
Subject: [PATCH] [fix](load) fix ctx nullptr core in flush_single_memtable
 (#20573)

---
 be/src/olap/rowset/beta_rowset_writer.cpp | 4 +++-
 be/src/olap/rowset/rowset_writer.h        | 4 +---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/be/src/olap/rowset/beta_rowset_writer.cpp b/be/src/olap/rowset/beta_rowset_writer.cpp
index 4e462f1e4b..7f330a80b7 100644
--- a/be/src/olap/rowset/beta_rowset_writer.cpp
+++ b/be/src/olap/rowset/beta_rowset_writer.cpp
@@ -494,7 +494,9 @@ Status BetaRowsetWriter::flush_single_memtable(const vectorized::Block* block, i
     int32_t segment_id = writer->get_segment_id();
     RETURN_IF_ERROR(_add_block(block, &writer));
     RETURN_IF_ERROR(_flush_segment_writer(&writer, flush_size));
-    RETURN_IF_ERROR(ctx->generate_delete_bitmap(segment_id));
+    if (ctx != nullptr && ctx->generate_delete_bitmap) {
+        RETURN_IF_ERROR(ctx->generate_delete_bitmap(segment_id));
+    }
     RETURN_IF_ERROR(_segcompaction_if_necessary());
     return Status::OK();
 }
diff --git a/be/src/olap/rowset/rowset_writer.h b/be/src/olap/rowset/rowset_writer.h
index 3ccd481ec7..aea4a05bcc 100644
--- a/be/src/olap/rowset/rowset_writer.h
+++ b/be/src/olap/rowset/rowset_writer.h
@@ -41,9 +41,7 @@ struct FlushContext {
     TabletSchemaSPtr flush_schema = nullptr;
     const vectorized::Block* block = nullptr;
     std::optional<int32_t> segment_id = std::nullopt;
-    std::function<Status(int32_t)> generate_delete_bitmap = [](int32_t segment_id) {
-        return Status::OK();
-    };
+    std::function<Status(int32_t)> generate_delete_bitmap;
 };
 
 class RowsetWriter {