[infinispan-issues] [JBoss JIRA] (ISPN-11834) Rest ResponseWrite CHUNKED_FILE response is blocking

[Will Burns (Jira)]

Will Burns created ISPN-11834:
---------------------------------

             Summary: Rest ResponseWrite CHUNKED_FILE response is blocking
                 Key: ISPN-11834
                 URL: https://issues.redhat.com/browse/ISPN-11834
             Project: Infinispan
          Issue Type: Bug
          Components: REST
            Reporter: Will Burns


The CHUNKED_FILE annotation blocks while trying to write the response since it has to read from the underlying disk. This can be seen from the StaticResourceTest.

Here is an example stack trace:

{code}
    <failure type="java.lang.AssertionError" message="Blocking call! java.io.RandomAccessFile#readBytes on thread Thread[REST-StaticResourceTest-StaticResourceTest-NodeA-ServerIO-81-1,5,main]">
      <![CDATA[java.lang.AssertionError: Blocking call! java.io.RandomAccessFile#readBytes on thread Thread[REST-StaticResourceTest-StaticResourceTest-NodeA-ServerIO-81-1,5,main]
	at org.infinispan.util.CoreTestBlockHoundIntegration.lambda$applyTo$0(CoreTestBlockHoundIntegration.java:44)
	at reactor.blockhound.BlockHound$Builder.lambda$install$8(BlockHound.java:383)
	at reactor.blockhound.BlockHoundRuntime.checkBlocking(BlockHoundRuntime.java:89)
	at java.base/java.io.RandomAccessFile.readBytes(RandomAccessFile.java)
	at java.base/java.io.RandomAccessFile.read(RandomAccessFile.java:406)
	at java.base/java.io.RandomAccessFile.readFully(RandomAccessFile.java:470)
	at io.netty.handler.stream.ChunkedFile.readChunk(ChunkedFile.java:149)
	at io.netty.handler.stream.ChunkedFile.readChunk(ChunkedFile.java:35)
	at io.netty.handler.codec.http.HttpChunkedInput.readChunk(HttpChunkedInput.java:102)
	at io.netty.handler.codec.http.HttpChunkedInput.readChunk(HttpChunkedInput.java:43)
	at io.netty.handler.stream.ChunkedWriteHandler.doFlush(ChunkedWriteHandler.java:230)
	at io.netty.handler.stream.ChunkedWriteHandler.flush(ChunkedWriteHandler.java:132)
	at io.netty.channel.AbstractChannelHandlerContext.invokeFlush0(AbstractChannelHandlerContext.java:750)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:765)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:790)
	at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:758)
	at org.infinispan.rest.ResponseWriter$3.writeResponse(ResponseWriter.java:69)
	at org.infinispan.rest.BaseHttpRequestHandler.lambda$sendResponse$0(BaseHttpRequestHandler.java:46)
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164)
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:384)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)

{code}



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