From a2d75a327cb68a4f59c76c6d2b9a2150880b6eee Mon Sep 17 00:00:00 2001
From: shenglian zhou <shenglian_zhou@163.com>
Date: Tue, 18 Apr 2023 08:28:12 +0800
Subject: [PATCH] enhance: udf output column reserve capacity

---
 source/libs/function/src/udfd.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/source/libs/function/src/udfd.c b/source/libs/function/src/udfd.c
index 61c6f92e2f..5034af2f82 100644
--- a/source/libs/function/src/udfd.c
+++ b/source/libs/function/src/udfd.c
@@ -688,6 +688,8 @@ void udfdProcessCallRequest(SUvUdfWork *uvUdf, SUdfRequest *request) {
       output.colMeta.type = udf->outputType;
       output.colMeta.precision = 0;
       output.colMeta.scale = 0;
+      udfColEnsureCapacity(&output, call->block.info.rows);
+
       SUdfDataBlock input = {0};
       convertDataBlockToUdfDataBlock(&call->block, &input);
       code = udf->scriptPlugin->udfScalarProcFunc(&input, &output, udf->scriptUdfCtx);
-- 
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