[jbossseam-issues] [JBoss JIRA] Closed: (JBSEAM-3884) Seam file upload 100% CPU in MultipartRequest

Seam file upload 100% CPU in MultipartRequest --------------------------------------------- Key: JBSEAM-3884 URL: https://jira.jboss.org/jira/browse/JBSEAM-3884 Project: Seam Issue Type: Bug Affects Versions: 2.1.1.GA Environment: JBoss EAP 4.3.0.GA (no CP) Java VM: Java HotSpot(TM) Server VM 1.5.0_13-b05,Sun Microsystems Inc. OS-System: Linux 2.6.9-67.EL,i386 and JBoss EAP 4.2.0.GA (no CP) Java VM: Java HotSpot(TM) 64-Bit Server VM 1.5.0_12-b04,Sun Microsystems Inc. OS-System: Linux 2.6.9-34.ELsmp,amd64 Reporter: Takayoshi Kimura Assignee: Takayoshi Kimura Fix For: 2.1.2.CR1 Sometimes org.jboss.seam.web.MultipartRequest#parseRequest() goes into an endless loop and takes 100% CPU when uploading a large file. The root cause is most likely due to the HttpServletRequest#getInputStream()#read() always returns 0. The API docs for InputStream state: "If the first byte cannot be read for any reason other than end of file, then an |IOException| is thrown. In particular, an |IOException| is thrown if the input stream has been closed." It's similar problem to RF-3746: https://jira.jboss.org/jira/browse/RF-3746