zentol commented on a change in pull request #16345:
URL: https://github.com/apache/flink/pull/16345#discussion_r663091576
##########
File path:
flink-rpc/flink-rpc-core/src/main/java/org/apache/flink/runtime/rpc/RpcSystem.java
##########
@@ -86,8 +95,28 @@ static RpcSystem load() {
* @return loaded RpcSystem
*/
static RpcSystem load(Configuration config) {
- final ClassLoader classLoader = RpcSystem.class.getClassLoader();
- return ServiceLoader.load(RpcSystem.class,
classLoader).iterator().next();
+ try {
+ final ClassLoader classLoader = RpcSystem.class.getClassLoader();
+
+ final String tmpDirectory =
ConfigurationUtils.parseTempDirectories(config)[0];
+ final Path tempFile = Files.createFile(Paths.get(tmpDirectory,
"flink-rpc-akka.jar"));
+ IOUtils.copyBytes(
+ classLoader.getResourceAsStream("flink-rpc-akka.jar"),
+ Files.newOutputStream(tempFile));
+
+ final PluginLoader pluginLoader =
+ PluginLoader.create(
+ new PluginDescriptor(
+ "flink-rpc-akka",
+ new URL[] {tempFile.toUri().toURL()},
+ new String[0]),
+ classLoader,
+
CoreOptions.getPluginParentFirstLoaderPatterns(config));
Review comment:
oh yes a user messing with it breaks things big time. Since we are
dealing here with a mechanism that is not intended to be extended by the user
I'm +1 on using a constant.
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