[OAK-8473] oak-run recovery fails with custom blob store

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.16.0
• Component/s: run
• Assignee: Marcel Reutegger
• Reporter: Marcel Reutegger
• Created: 11/Jul/19 07:06
• Updated: 29/Jul/19 06:31
• Resolved: 11/Jul/19 08:23

Description

The oak-run recovery command fails with an exception when the repository was created
with a custom blob store. E.g. when blobs are stored on the file system instead of in the
database. The command complains about the missing blobs collection:

Exception in thread "main" java.lang.RuntimeException: MongoBlobStore instantiated read-only, but collection blobs not present
	at org.apache.jackrabbit.oak.plugins.document.mongo.MongoBlobStore.initBlobCollection(MongoBlobStore.java:210)
	at org.apache.jackrabbit.oak.plugins.document.mongo.MongoBlobStore.<init>(MongoBlobStore.java:113)
	at org.apache.jackrabbit.oak.plugins.document.mongo.MongoDocumentNodeStoreBuilderBase.lambda$setMongoDB$2(MongoDocumentNodeStoreBuilderBase.java:230)
	at com.google.common.base.Suppliers$MemoizingSupplier.get(Suppliers.java:125)
	at org.apache.jackrabbit.oak.plugins.document.DocumentNodeStoreBuilder.getBlobStore(DocumentNodeStoreBuilder.java:305)
	at org.apache.jackrabbit.oak.plugins.document.DocumentNodeStore.<init>(DocumentNodeStore.java:522)
	at org.apache.jackrabbit.oak.plugins.document.DocumentNodeStoreBuilder.build(DocumentNodeStoreBuilder.java:162)
	at org.apache.jackrabbit.oak.run.RecoveryCommand.execute(RecoveryCommand.java:63)
	at org.apache.jackrabbit.oak.run.Main.main(Main.java:49)

The check and the exception were introduced with OAK-8252. Those changes are not yet in
a released Oak version.

Issue Links

• relates to: OAK-8252 MongoBlobStore instantiated from ReadOnly DocumentNodeStore should never modify persistence