From c314123369b7bd6038979c597bde99a07237f746 Mon Sep 17 00:00:00 2001
From: laihui <laihui@selectdb.com>
Date: Mon, 1 Dec 2025 11:43:44 +0800
Subject: [PATCH] [fix](nereids) fix copy into load orc/parquet format fail
 (#57362)

introduced by https://github.com/apache/doris/issues/50471

Fix copy into load orc/parquet format fail:
```
mysql> copy into orc_test              from (select p_partkey, p_name, p_mfgr, p_brand, p_type, p_size from @regression_test_customer('copy_into/orc/part.orc') )              properties ('file.type' = 'orc', 'copy.async' = 'false');
ERROR 1105 (HY000): errCode = 2, detailMessage = Cannot invoke "String.toLowerCase()" because the return value of "java.util.Map.get(Object)" is null
```

None

- Test <!-- At least one of them must be included. -->
    - [ ] Regression test
    - [ ] Unit Test
    - [ ] Manual test (add detailed scripts or steps below)
    - [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
        - [ ] Previous test can cover this change.
        - [ ] No code files have been changed.
        - [ ] Other reason <!-- Add your reason?  -->

- Behavior changed:
    - [ ] No.
    - [ ] Yes. <!-- Explain the behavior change -->

- Does this need documentation?
    - [ ] No.
- [ ] Yes. <!-- Add document PR link here. eg:
https://github.com/apache/doris-website/pull/1214 -->

- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label <!-- Add branch pick label that this PR
should merge into -->
---
 .../nereids/trees/plans/commands/info/CopyIntoInfo.java      | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/info/CopyIntoInfo.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/info/CopyIntoInfo.java
index a97149569b6c83..f0fc2630500b07 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/info/CopyIntoInfo.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/info/CopyIntoInfo.java
@@ -266,7 +266,10 @@ public void doValidate(String user, String db, boolean checkAuth) throws Analysi
                     analyzer, context, cascadesContext);
         }
 
-        dataDescProperties.put(FileFormatProperties.PROP_COMPRESS_TYPE, copyIntoProperties.getCompression());
+        String compression = copyIntoProperties.getCompression();
+        if (compression != null) {
+            dataDescProperties.put(FileFormatProperties.PROP_COMPRESS_TYPE, compression);
+        }
         dataDescription = new DataDescription(tableName.getTbl(), null, Lists.newArrayList(filePath),
             copyFromDesc.getFileColumns(), separator, fileFormatStr, null, false,
             legacyColumnMappingList, legacyFileFilterExpr, null, LoadTask.MergeType.APPEND, null,