From e4c48cfec5eed4d4f1fcbc7cd3529f3730c5a0c0 Mon Sep 17 00:00:00 2001
From: Mingyu Chen <morningman@163.com>
Date: Fri, 30 Aug 2024 22:56:08 +0800
Subject: [PATCH] [fix](multi-catalog)fix max compute null parts table read
 (#40046) (#40179)

bp #40046

Co-authored-by: slothever <18522955+wsjz@users.noreply.github.com>
---
 .../java/org/apache/doris/maxcompute/MaxComputeJniScanner.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fe/be-java-extensions/max-compute-scanner/src/main/java/org/apache/doris/maxcompute/MaxComputeJniScanner.java b/fe/be-java-extensions/max-compute-scanner/src/main/java/org/apache/doris/maxcompute/MaxComputeJniScanner.java
index 6a441a6929..515ef8f401 100644
--- a/fe/be-java-extensions/max-compute-scanner/src/main/java/org/apache/doris/maxcompute/MaxComputeJniScanner.java
+++ b/fe/be-java-extensions/max-compute-scanner/src/main/java/org/apache/doris/maxcompute/MaxComputeJniScanner.java
@@ -170,6 +170,9 @@ public class MaxComputeJniScanner extends JniScanner {
                 // query columns required non-null, when query partition table
                 pushDownColumns.add(session.getSchema().getColumn(0));
             }
+            if (totalRows == 0) {
+                return;
+            }
             arrowAllocator = new RootAllocator(Integer.MAX_VALUE);
             curReader = session.openArrowRecordReader(start, totalRows, pushDownColumns, arrowAllocator);
             remainBatchRows = totalRows;