Honor zero-copy read disable flag

xborder · xborder · commit 289ebb0bdcab · 2026-05-20T12:21:00.000+01:00
diff --git a/flight/flight-core/src/main/java/org/apache/arrow/flight/ArrowMessage.java b/flight/flight-core/src/main/java/org/apache/arrow/flight/ArrowMessage.java
@@ -78,7 +78,7 @@ class ArrowMessage implements AutoCloseable {
     if (zeroCopyWriteFlag == null) {
       zeroCopyWriteFlag = System.getenv("ARROW_FLIGHT_ENABLE_ZERO_COPY_WRITE");
     }
-    ENABLE_ZERO_COPY_READ = true; // !"false".equalsIgnoreCase(zeroCopyReadFlag);
+    ENABLE_ZERO_COPY_READ = !"false".equalsIgnoreCase(zeroCopyReadFlag);
     ENABLE_ZERO_COPY_WRITE = "true".equalsIgnoreCase(zeroCopyWriteFlag);
   }
 

Original file line number	Diff line number	Diff line change
`@@ -78,7 +78,7 @@ class ArrowMessage implements AutoCloseable {`
`78`	`78`	`if (zeroCopyWriteFlag == null) {`
`79`	`79`	`zeroCopyWriteFlag = System.getenv("ARROW_FLIGHT_ENABLE_ZERO_COPY_WRITE");`
`80`	`80`	`}`
`81`		`- ENABLE_ZERO_COPY_READ = true; // !"false".equalsIgnoreCase(zeroCopyReadFlag);`
	`81`	`+ ENABLE_ZERO_COPY_READ = !"false".equalsIgnoreCase(zeroCopyReadFlag);`
`82`	`82`	`ENABLE_ZERO_COPY_WRITE = "true".equalsIgnoreCase(zeroCopyWriteFlag);`
`83`	`83`	`}`
`84`	`84`