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new 6eacaff HDFS-15623. Respect configured values of rpc.engine (#2403)
Contributed by Hector Chaverri.
6eacaff is described below
commit 6eacaffeea21e7e9286497ee17f89fd939d2eead
Author: hchaverr <[email protected]>
AuthorDate: Thu Oct 22 10:32:28 2020 -0700
HDFS-15623. Respect configured values of rpc.engine (#2403) Contributed by
Hector Chaverri.
---
.../src/main/java/org/apache/hadoop/ipc/RPC.java | 8 ++++++--
.../src/test/java/org/apache/hadoop/ipc/TestRPC.java | 12 ++++++++++++
2 files changed, 18 insertions(+), 2 deletions(-)
diff --git
a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/RPC.java
b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/RPC.java
index e794cb9..ad3628d01 100644
---
a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/RPC.java
+++
b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/RPC.java
@@ -195,14 +195,18 @@ public class RPC {
private static final String ENGINE_PROP = "rpc.engine";
/**
- * Set a protocol to use a non-default RpcEngine.
+ * Set a protocol to use a non-default RpcEngine if one
+ * is not specified in the configuration.
* @param conf configuration to use
* @param protocol the protocol interface
* @param engine the RpcEngine impl
*/
public static void setProtocolEngine(Configuration conf,
Class<?> protocol, Class<?> engine) {
- conf.setClass(ENGINE_PROP+"."+protocol.getName(), engine, RpcEngine.class);
+ if (conf.get(ENGINE_PROP+"."+protocol.getName()) == null) {
+ conf.setClass(ENGINE_PROP+"."+protocol.getName(), engine,
+ RpcEngine.class);
+ }
}
// return the RpcEngine configured to handle a protocol
diff --git
a/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestRPC.java
b/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestRPC.java
index cd2433a..628c044 100644
---
a/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestRPC.java
+++
b/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestRPC.java
@@ -1554,6 +1554,18 @@ public class TestRPC extends TestRpcBase {
}
}
+ @Test
+ public void testSetProtocolEngine() {
+ Configuration conf = new Configuration();
+ RPC.setProtocolEngine(conf, StoppedProtocol.class, StoppedRpcEngine.class);
+ RpcEngine rpcEngine = RPC.getProtocolEngine(StoppedProtocol.class, conf);
+ assertTrue(rpcEngine instanceof StoppedRpcEngine);
+
+ RPC.setProtocolEngine(conf, StoppedProtocol.class,
ProtobufRpcEngine.class);
+ rpcEngine = RPC.getProtocolEngine(StoppedProtocol.class, conf);
+ assertTrue(rpcEngine instanceof StoppedRpcEngine);
+ }
+
public static void main(String[] args) throws Exception {
new TestRPC().testCallsInternal(conf);
}
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