PigServer has state, which isn't meant to be shared by multiple user sessions. On the other hand, PIG-1784 made PigServer thread-safe, so depending on your version, you may choose having multiple instances in your Tomcat, one for each user session.
On Tue, Apr 28, 2015 at 1:51 AM, 李运田 <[email protected]> wrote: > I have a big web ETL system ,which use pig as ETL tool. when I start > tomcat , I also start one pigserver,and all users use the only > pigserver,perhaps when these users use this system ,there will be some > unknown errors ?
