[HADOOP-9182] the buffer used in hdfsRead seems leaks when the thread exits

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: filecache

Environment

Linux RHEP x64

• Assignee: Unassigned
• Reporter: dingyichuan
• Created: 07/Jan/13 15:02
• Updated: 14/Jan/13 11:06

Description

I use multi-threads in my c++ program to download 3000 files in HDFS use libhdfs. Every thread is created by "pthread_create" to download a file and exit. We monitor the memory status when the program is running. It seems every thread will create a buffer which size is specified by the buffersize parameter in "hdfsOpenFile" function. But when the thread finish the task and exit, it doesn't free the buffer. So our program will eventually abort by Java's "out of memory" exception. I just don't know how to free the buffer or I use these functions in wrong way. Thanks!