hadoop-common-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From GitBox <...@apache.org>
Subject [GitHub] [hadoop] sahilTakiar commented on a change in pull request #595: HDFS-14304: High lock contention on hdfsHashMutex in libhdfs
Date Tue, 19 Mar 2019 21:07:49 GMT
sahilTakiar commented on a change in pull request #595: HDFS-14304: High lock contention on
hdfsHashMutex in libhdfs
URL: https://github.com/apache/hadoop/pull/595#discussion_r267097811
 
 

 ##########
 File path: hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfs/jni_helper.c
 ##########
 @@ -534,6 +545,21 @@ JNIEnv* getJNIEnv(void)
 
     state->env = getGlobalJNIEnv();
     mutexUnlock(&jvmMutex);
+
+    if (!jclassesInitialized) {
+      mutexLock(&jclassInitMutex);
+      if (!jclassesInitialized) {
 
 Review comment:
   Fixed. Removed the first `if` statement, so `initCachedClasses` always acquires the lock.

----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
 
For queries about this service, please contact Infrastructure at:
users@infra.apache.org


With regards,
Apache Git Services

---------------------------------------------------------------------
To unsubscribe, e-mail: common-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: common-issues-help@hadoop.apache.org


Mime
View raw message