[SLING-10402] MongoDB doesn't work anymore with Sling Starter

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Starter 12
• Fix Version/s: Starter 12
• Component/s: Starter
• Environment: Sling-Starter 12-SNAPSHOT (commit a6b94beb7b) with JDK 11 on MacOS
• Assignee: Robert Munteanu
• Reporter: Hans-Peter Stoerr
• Created: 20/May/21 07:48
• Updated: 18/Mar/22 15:05
• Resolved: 20/May/21 11:04

Description

When starting the Sling Starter 12 SNAPSHOT with, the Repository doesn't seem to work properly right now when I'm using MongoDB. It starts up, but when I open http://localhost:8080/bin/browser.html, I get an exception reading from the database (see below). I tried with mongodb 4.4.6 (the latest one) and 4.0.3. This issue seems to be connected to the version of org.mongodb:mongo-java-driver - it came in when it was upgraded from 3.8.2 to 3.12.7; if I downgrade to 3.10.2 it works, but with 3.11.3, 3.12.7 or 3.12.8 it doesn't.

Caused by: java.lang.RuntimeException: failed to read block from backend, id 6e01a3001107903ee3971f74d9ba7e4bf6d512d47b1006b708f7ca295658fead@0
	at org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore.load(AbstractBlobStore.java:509)
	at org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore.readBlock(AbstractBlobStore.java:500)
	at org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore.readBlob(AbstractBlobStore.java:486)
	at org.apache.jackrabbit.oak.spi.blob.BlobStoreInputStream.read(BlobStoreInputStream.java:45)
	... 96 more
Caused by: java.lang.UnsupportedOperationException: The BsonCodec can only encode to Bson
	at org.bson.codecs.BsonCodec.decode(BsonCodec.java:48)
	at org.bson.codecs.BsonCodec.decode(BsonCodec.java:33)
	at com.mongodb.operation.CommandResultArrayCodec.decode(CommandResultArrayCodec.java:52)
	at com.mongodb.operation.CommandResultDocumentCodec.readValue(CommandResultDocumentCodec.java:60)
	at org.bson.codecs.BsonDocumentCodec.decode(BsonDocumentCodec.java:84)
	at org.bson.codecs.BsonDocumentCodec.decode(BsonDocumentCodec.java:41)
	at org.bson.codecs.configuration.LazyCodec.decode(LazyCodec.java:47)
	at org.bson.codecs.BsonDocumentCodec.readValue(BsonDocumentCodec.java:101)
	at com.mongodb.operation.CommandResultDocumentCodec.readValue(CommandResultDocumentCodec.java:63)
	at org.bson.codecs.BsonDocumentCodec.decode(BsonDocumentCodec.java:84)
	at org.bson.codecs.BsonDocumentCodec.decode(BsonDocumentCodec.java:41)
	at com.mongodb.internal.connection.ReplyMessage.<init>(ReplyMessage.java:51)
	at com.mongodb.internal.connection.InternalStreamConnection.getCommandResult(InternalStreamConnection.java:413)
	at com.mongodb.internal.connection.InternalStreamConnection.receiveCommandMessageResponse(InternalStreamConnection.java:309)
	at com.mongodb.internal.connection.InternalStreamConnection.sendAndReceive(InternalStreamConnection.java:259)
	at com.mongodb.internal.connection.UsageTrackingInternalConnection.sendAndReceive(UsageTrackingInternalConnection.java:99)
	at com.mongodb.internal.connection.DefaultConnectionPool$PooledConnection.sendAndReceive(DefaultConnectionPool.java:450)
	at com.mongodb.internal.connection.CommandProtocolImpl.execute(CommandProtocolImpl.java:72)
	at com.mongodb.internal.connection.DefaultServer$DefaultServerProtocolExecutor.execute(DefaultServer.java:218)
	at com.mongodb.internal.connection.DefaultServerConnection.executeProtocol(DefaultServerConnection.java:269)
	at com.mongodb.internal.connection.DefaultServerConnection.command(DefaultServerConnection.java:131)
	at com.mongodb.internal.connection.DefaultServerConnection.command(DefaultServerConnection.java:123)
	at com.mongodb.operation.CommandOperationHelper.executeCommand(CommandOperationHelper.java:343)
	at com.mongodb.operation.CommandOperationHelper.executeCommand(CommandOperationHelper.java:334)
	at com.mongodb.operation.CommandOperationHelper.executeCommandWithConnection(CommandOperationHelper.java:220)
	at com.mongodb.operation.FindOperation$1.call(FindOperation.java:731)
	at com.mongodb.operation.FindOperation$1.call(FindOperation.java:725)
	at com.mongodb.operation.OperationHelper.withReadConnectionSource(OperationHelper.java:463)
	at com.mongodb.operation.FindOperation.execute(FindOperation.java:725)
	at com.mongodb.operation.FindOperation.execute(FindOperation.java:89)
	at com.mongodb.client.internal.MongoClientDelegate$DelegateOperationExecutor.execute(MongoClientDelegate.java:189)
	at com.mongodb.client.internal.MongoIterableImpl.execute(MongoIterableImpl.java:143)
	at com.mongodb.client.internal.MongoIterableImpl.iterator(MongoIterableImpl.java:92)
	at com.mongodb.client.internal.MongoIterableImpl.forEach(MongoIterableImpl.java:121)
	at com.mongodb.client.internal.MongoIterableImpl.into(MongoIterableImpl.java:133)
	at org.apache.jackrabbit.oak.plugins.document.mongo.MongoBlobStore.getBlob(MongoBlobStore.java:234)
	at org.apache.jackrabbit.oak.plugins.document.mongo.MongoBlobStore.readBlockFromBackend(MongoBlobStore.java:153)
	at org.apache.jackrabbit.oak.spi.blob.AbstractBlobStore.load(AbstractBlobStore.java:507)

Issue Links

• relates to: SLING-10656 SmokeIT readable URL checks need retries
• links to: PR to resolve the issue
• links to: PR#24 - run SmokeIT on both tar and mongo features