Attendees
General
- Indicates who took minutes -
- Call-in: Google-hangout at:
Meetings
7/21
No meeting.
7/22
- Wrapping up the last sprint
- Mohamed
- 'Cluster: Read load balancing'
- https://www.pivotaltracker.com/story/show/74559810
- Seeing some garbage collection errors
- Tomcat remains in memory after being shutdown in a clustered environment
- Will also test load balancer in front of cluster when deployed on a single machine for comparison purposes
- 'Cluster: Read load balancing'
- Andrew
- Many tickets from last sprint ready for review
- Will go through and review tickets
- Will add a few new issues for Mohamed to work on this week
- Many tickets from last sprint ready for review
- Mohamed
7/23
- Mohamed
- 'Cluster: Read load balancing'
- https://www.pivotaltracker.com/story/show/74559810
- Data has been loaded into 2 nodes
- Used a 100 child hierarchy; improved performance
- Note performance difference between loading all servers at once versus loading one and syncing to others
- Modeshape issue
- 'Many child nodes slowdown'
- https://www.pivotaltracker.com/story/show/75459836
- Measuring ingest time via script
- Moving Fedora VM from Columbia to MD
- Getting Jenkins and Sonar installed on a local VM
- 'Cluster: Read load balancing'
- Andrew
- Starting with tickets Mohamed completed
7/24
7/25
- Mohamed
- Working Jenkins/Sonar migration from Columbia
- Needs JENKINS_HOME
- Needs Sonar home-dir
- Working clustered-read testing
- Not much performance difference between cluster and single server (even when single server is also behind an LB)
- Working Modeshape-many-children performance issue
- With YourKit, noticing that "save" and "versionManager" take much longer in the case where many-children exist
- Working Jenkins/Sonar migration from Columbia
7/28
No meeting
7/29
- Mohamed
- Migrating Jenkins and Sonar from Columbia to MD
- Andrew transferring config and data to MD
- 'Many child nodes slowdown'
- https://www.pivotaltracker.com/story/show/75459836
- Discussion and JIRA ticket in ModeShape community
- https://community.jboss.org/thread/243191
- Auto-generate at Modeshape layer and hide from Fedora
- They will hopefully agree on an approach and we may help on a patch
- 'Cluster: Read load balancing'
- https://www.pivotaltracker.com/story/show/74559810
- Comparison between cluster and single node
- Hope that clustered reads would be faster than single node
- Initial tests don’t bear this out
- 'rdf:type triples are duplicated in output'
- https://www.pivotaltracker.com/story/show/71751536
- Pull request has a lot of discussion
- Duplicate triples might not matter
- Current solution eliminates benefits of RDF generation framework (runtime, streaming, iterative).
- Migrating Jenkins and Sonar from Columbia to MD
7/30
- Mohamed
- 'migrate sonar to umd server'
- https://www.pivotaltracker.com/story/show/75522872
- Working on this today
- https://www.pivotaltracker.com/story/show/75522872
- 'migrate jenkins to umd server'
- https://www.pivotaltracker.com/story/show/75522796
- This is complete
- 'Cluster: Read load balancing'
- https://www.pivotaltracker.com/story/show/74559810
- Loading a different dataset for continued testing
- 'rdf:type triples are duplicated in output'
- https://www.pivotaltracker.com/story/show/71751536
- Will move on to this ticket if the other issues are resolved today
- 'migrate sonar to umd server'
7/31