I am really glad after seeing your response to my issue.
I will explain how i am upgrading first. I downloaded the 2.138 war and restarted Jenkins. is it correct way to upgrade? OR do i need to first upgrade all plugins on top of 2.73 and then download 2.138 war and restart? Please correct my Jenkins upgrade process. Till now i was just downloading latest war and restarting Jenkins was working.
Regarding issues from log, i can below errors from log.
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WARNING: hudson.plugins.view.dashboard.Dashboard in file:/scratch/jenkins/plugins/dashboard-view/WEB-INF/lib/dashboard-view.jar might be dangerous, so rejecting; see
https://jenkins.io/redirect/class-filter/Mar 26, 2019 10:13:36 AM jenkins.security.ClassFilterImpl lambda$isBlacklisted$1
WARNING: jenkins.plugins.publish_over.BPInstanceConfig in file:/scratch/jenkins/plugins/publish-over-ssh/WEB-INF/lib/publish-over-0.18.jar might be dangerous, so rejecting; see
https://jenkins.io/redirect/class-filter/WARNING: Build record migration (
https://jenkins.io/redirect/build-record-migration) is one-way. If you need to downgrade Jenkins, run: java -classpath "/scratch/jenkins/war/WEB-INF/lib/jenkins-core-2.107.1.jar:/scratch/jenkins/war/WEB-INF/lib/commons-io-2.4.jar:/scratch/jenkins/war/WEB-INF/lib/stapler-1.254.jar:/scratch/jenkins/war/WEB-INF/lib/ant-1.9.2.jar:/scratch/jenkins/war/WEB-INF/lib/commons-lang-2.6.jar" jenkins.model.RunIdMigrator "/scratch/jenkins"
Mar 26, 2019 10:13:37 AM jenkins.model.RunIdMigrator migrate
INFO: Migrating build records in /scratch/jenkins/jobs/Main-Pipeline (old)/builds
Mar 26, 2019 10:13:37 AM jenkins.model.RunIdMigrator migrate
INFO: Migrating build records in /scratch/jenkins/jobs/Occs-Frontend-Framework-Pipeline/builds
Mar 26, 2019 10:13:37 AM jenkins.model.RunIdMigrator migrate
INFO: Migrating build records in /scratch/jenkins/jobs/CC_ServerExtensions - main/builds
Mar 26, 2019 10:13:37 AM com.cloudbees.hudson.plugins.folder.views.DefaultFolderViewHolder migrateLegacyPrimaryAllViewLocalizedName
INFO: JENKINS-38606 detected for AllView in com.cloudbees.hudson.plugins.folder.Folder@54b34631[Experiments/ExperimentsSharedLib/SeedJobsTest/Main]; renaming view from All to all
Mar 26, 2019 10:13:37 AM com.cloudbees.hudson.plugins.folder.views.DefaultFolderViewHolder migrateLegacyPrimaryAllViewLocalizedName
INFO: JENKINS-38606 detected for AllView in com.cloudbees.hudson.plugins.folder.Folder@7748c014[Experiments/ExperimentsSharedLib/SeedJobsTest/Shelves]; renaming view from All to all
Mar 26, 2019 10:13:37 AM com.cloudbees.hudson.plugins.folder.views.DefaultFolderViewHolder migrateLegacyPrimaryAllViewLocalizedName
INFO: JENKINS-38606 detected for AllView in com.cloudbees.hudson.plugins.folder.Folder@75b3be9[Experiments/ExperimentsSharedLib/SeedJobsTest/Shelves/ShelvedMain]; renaming view from All to
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