steven zhang created HADOOP-17334:
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Summary: CosNInputStream should throw exception when filesystem is
closed
Key: HADOOP-17334
URL: https://issues.apache.org/jira/browse/HADOOP-17334
Project: Hadoop Common
Issue Type: Improvement
Components: fs, fs/cos
Affects Versions: 3.3.0
Reporter: steven zhang
Thread hangs when other thread call filesystem.close(). log as below
971 [main] INFO org.apache.hadoop.fs.cosn.CosNFileSystem - Open the file:
[cosn://bigdata-test
1075 [main] ERROR org.apache.hadoop.util.BlockingThreadPoolExecutorService -
Could not submit task to executor java.util.concurrent.ThreadPoolExecutor
the thread hangs reason is :
# filesystem is cached when multiple thread using FileSystem#get method for
creating instance
# CosNInputStream#read method is not check CosNFileSystem is closed
# CosNInputStream is using multiple thread(CosNFileReadTask) for read and main
thread will await when readbuffer status is init
# CosNFileSystem#close method will shutdown boundedIOThreadPool . so
CosNInputStream#CosNFileReadTask will not notify main thread and cause thread
hangs
so CosNInputStream should throw exception when filesystem is closed
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