lriggs commented on issue #601:
URL: https://github.com/apache/arrow-java/issues/601#issuecomment-2652399104
```
diff --git
a/java/gandiva/src/main/java/org/apache/arrow/gandiva/evaluator/Projector.java
b/java/gandiva/src/main/java/org/apache/arrow/gandiva/evaluator/Projector.java
index 951cebc88e..a67d20db6b 100644
---
a/java/gandiva/src/main/java/org/apache/arrow/gandiva/evaluator/Projector.java
+++
b/java/gandiva/src/main/java/org/apache/arrow/gandiva/evaluator/Projector.java
@@ -187,7 +187,7 @@ public class Projector {
* @param configurationId Custom configuration created through config
builder.
* @return A native evaluator object that can be used to invoke these
projections on a RecordBatch
*/
- public static Projector make(
+ public static synchronized Projector make(
Schema schema,
List<ExpressionTree> exprs,
SelectionVectorType selectionVectorType,
@@ -313,7 +313,7 @@ public class Projector {
outColumns);
}
- private void evaluate(
+ private synchronized void evaluate(
int numRows,
List<ArrowBuf> buffers,
List<ArrowBuffer> buffersLayout,
```
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