Error 1: azkaban job Preparing
Solution:
modify the configuration of web-server conf/azkaban.properties
# execute host filter configuration, remove MinimumFreeMemory
# MinimumFreeMemory filter will check if the executor host will have more than 6G of free memory, if less than 6G, the web-server will not send the task to that host
azkaban.executorselector.filters=StaticRemainingFlowSize,CpuStatus
Error 2: When the job is running，azkaban web Error: Free memory amount minus Xmx (2836204 – 0 kb) is less than low mem threshold (3145728 kb), memory request declined
Solution:
[root@qphone02 executor]# vi ./plugins/jobtypes/commonprivate.properties
# set execute-as-user
execute.as.user=false
memCheck.enabled=false # add memory check is off, otherwise it will report error: less than 3G