lidavidm commented on code in PR #14164:
URL: https://github.com/apache/arrow/pull/14164#discussion_r984794322


##########
java/adapter/avro/src/test/java/org/apache/arrow/AvroTestBase.java:
##########
@@ -45,19 +46,17 @@
 import org.apache.avro.io.DatumWriter;
 import org.apache.avro.io.DecoderFactory;
 import org.apache.avro.io.EncoderFactory;
-import org.junit.Before;
-import org.junit.ClassRule;
-import org.junit.rules.TemporaryFolder;
+import org.junit.jupiter.api.BeforeEach;
 
 public class AvroTestBase {
 
-  @ClassRule
-  public static final TemporaryFolder TMP = new TemporaryFolder();
+  public Path tmp;
 
   protected AvroToArrowConfig config;
 
-  @Before
-  public void init() {
+  @BeforeEach
+  void prepare() throws Exception {
+    this.tmp = Files.createTempDirectory("avro");

Review Comment:
   tmpfs isn't cleaned up on Linux, at least, not until reboot. It might be 
easier to keep the JUnit4 implementation then.



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