Spark messenger afterimage error

gyw · August 13, 2018, 8:00am

I installed Spark on CentOS. but The following error occurs.

What should I do? Please help me.

error image

Working environment
os version : CentOS 7.2.1511
openfire version : Openfire 4.0.2
spark version : Spark 2.7.7
java version : java-1.7.0

wroot · August 13, 2018, 9:29am

Are you using Oracle java?

gyw · August 13, 2018, 11:41am

i’m using the OpenJDK

currently installed Java package information.
sdfds

wroot · August 13, 2018, 3:08pm

And it shows the 1.7.0 version. It is known that Openfire and Spark can have issues sometimes when using OpenJDK. So, if possible, try switching to Oracle and 1.8.0. Can’t suggest how to do that, have not much experience with Linux and i wasn’t able to install Oracle Java on Fedora/CentOS in the past.