From 0ca4868aa2a9218f51b1ded7d9552c3ac58c8836 Mon Sep 17 00:00:00 2001
From: Ashutosh Gupta <ashutosh.gupta@st.niituniversity.in>
Date: Tue, 12 Jul 2022 12:15:26 +0100
Subject: [PATCH] HADOOP-18294. Ensure build folder exists before writing
 checksum file.ProtocRunner#writeChecksums (#4446)

Co-authored-by: Ashutosh Gupta <ashugpt@amazon.com>
Signed-off-by: Akira Ajisaka <aajisaka@apache.org>
---
 .../org/apache/hadoop/maven/plugin/protoc/ProtocRunner.java     | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hadoop-maven-plugins/src/main/java/org/apache/hadoop/maven/plugin/protoc/ProtocRunner.java b/hadoop-maven-plugins/src/main/java/org/apache/hadoop/maven/plugin/protoc/ProtocRunner.java
index e83a8cd957..c84bb1b38c 100644
--- a/hadoop-maven-plugins/src/main/java/org/apache/hadoop/maven/plugin/protoc/ProtocRunner.java
+++ b/hadoop-maven-plugins/src/main/java/org/apache/hadoop/maven/plugin/protoc/ProtocRunner.java
@@ -30,6 +30,7 @@
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
+import java.nio.file.Files;
 import java.util.Arrays;
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -172,6 +173,7 @@ private long computeChecksum(File file) throws IOException {
 
     public void writeChecksums() throws IOException {
       ObjectMapper mapper = new ObjectMapper();
+      Files.createDirectories(checksumFile.getParentFile().toPath());
       try (BufferedOutputStream out = new BufferedOutputStream(
           new FileOutputStream(checksumFile))) {
         mapper.writeValue(out, computedChecksums);