tisonkun commented on code in PR #1856:
URL: https://github.com/apache/zookeeper/pull/1856#discussion_r846131093
##########
zookeeper-server/src/main/java/org/apache/zookeeper/ClientCnxn.java:
##########
@@ -1284,10 +1284,11 @@ public void run() {
} catch (Throwable e) {
if (closing) {
// closing so this is expected
- LOG.warn(
- "An exception was thrown while closing send thread
for session 0x{}.",
- Long.toHexString(getSessionId()),
- e);
+ if (LOG.isDebugEnabled()) {
+ LOG.debug(
+ "An exception was thrown while closing send
thread for session 0x{}.",
+ Long.toHexString(getSessionId()), e);
+ }
Review Comment:
IIUC `LOG.debug` already contains a call to `LOG.isDebugEnabled`.
##########
zookeeper-server/src/main/java/org/apache/zookeeper/util/ServiceUtils.java:
##########
@@ -39,7 +39,14 @@ private ServiceUtils() {
*/
@SuppressFBWarnings("DM_EXIT")
public static final Consumer<Integer> SYSTEM_EXIT = (code) -> {
- LOG.error("Exiting JVM with code {}", code);
Review Comment:
I'd prefer to change `LOG_ONLY` below also. Here is my diff:
```diff
diff --git
a/zookeeper-server/src/main/java/org/apache/zookeeper/util/ServiceUtils.java
b/zookeeper-server/src/main/java/org/apache/zookeeper/util/ServiceUtils.java
index 544e13d7f..09c45e93f 100644
---
a/zookeeper-server/src/main/java/org/apache/zookeeper/util/ServiceUtils.java
+++
b/zookeeper-server/src/main/java/org/apache/zookeeper/util/ServiceUtils.java
@@ -39,7 +39,11 @@ private ServiceUtils() {
*/
@SuppressFBWarnings("DM_EXIT")
public static final Consumer<Integer> SYSTEM_EXIT = (code) -> {
- LOG.error("Exiting JVM with code {}", code);
+ if (code != 0) {
+ LOG.error("Exiting JVM with code {}", code);
+ } else {
+ LOG.info("Exiting JVM with code {}", code);
+ }
System.exit(code);
};
@@ -47,8 +51,11 @@ private ServiceUtils() {
* No-op strategy, useful for tests.
*/
public static final Consumer<Integer> LOG_ONLY = (code) -> {
- LOG.error("Fatal error, JVM should exit with code {}. "
- + "Actually System.exit is disabled", code);
+ if (code != 0) {
+ LOG.error("Fatal error, JVM should exit with code {}. Actually
System.exit is disabled", code);
+ } else {
+ LOG.info("JVM should exit with code {}. Actually System.exit is
disabled", code);
+ }
};
private static volatile Consumer<Integer> systemExitProcedure =
SYSTEM_EXIT;
@@ -56,8 +63,6 @@ private ServiceUtils() {
/**
* Override system callback. Useful for preventing the JVM to exit in
tests
* or in applications that are running an in-process ZooKeeper server.
- *
- * @param systemExitProcedure
*/
public static void setSystemExitProcedure(Consumer<Integer>
systemExitProcedure) {
Objects.requireNonNull(systemExitProcedure);
```
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