[SLING-7620] Bypassing Ghost Packages in SCD

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: Content Distribution Core 0.2.8
• Component/s: Content Distribution
• Assignee: Unassigned
• Reporter: Ankit Aggarwal
• Created: 26/Apr/18 06:46
• Updated: 08/Aug/19 11:42
• Resolved: 26/Apr/18 07:31

Description

Sometimes the distribution package gets deleted from the queue [0] but the actual item in the distribution queue [1] is not deleted leading it become a Ghost Package. Because of this same item is picked up again and again resulting in queue blocking and repeated warnings: 

19.03.2018 15:10:04.130 WARN [10.43.32.54 [1521486603947] POST /libs/sling/distribution/services/exporters/socialpubsync-reverse HTTP/1.1] org.apache.sling.distribution.packaging.impl.exporter.AgentDistributionPackageExporter cannot get package DistributionPackageInfo{ request.type=ADD, request.paths=[/home/groups/umuc/tus/cmit/cmit372/2188/027346-01-2188-OL1-6380/tnWOVAWBzaSHIzeDWana/rep:policy]}

We need to make the code fail safe to handle such situations i.e. deleting the item in the distribution queue if it is not able to find the corresponding package. 

[0] /var/sling/distribution/packages/socialpubsync-vlt/data

[1] /var/eventing/jobs/unassigned/org.apache.sling.distribution.queue.socialpubsync-reverse.default

 

cc: marett, mpetria

Issue Links

• duplicates: SLING-7555 Remove ghost packages from distribution agent queue
• links to: GitHub Pull Request #7