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https://issues.apache.org/jira/browse/SLING-10402?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17352315#comment-17352315
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Julian Sedding commented on SLING-10402:
----------------------------------------
bq. [...] strange that the 4th one works, mind you [...]
Oak inlines smaller blobs in its NodeStore and doesn't store them in the
BlobStore. Presumably the failure is related to the BlobStore, so if the 4th
image is small enough it may not trigger the same code-paths.
> MongoDB doesn't work anymore with Sling Starter
> -----------------------------------------------
>
> Key: SLING-10402
> URL: https://issues.apache.org/jira/browse/SLING-10402
> Project: Sling
> Issue Type: Bug
> Components: Starter
> Affects Versions: Starter 12
> Environment: Sling-Starter 12-SNAPSHOT (commit a6b94beb7b) with JDK
> 11 on MacOS
> Reporter: Hans-Peter Stoerr
> Assignee: Robert Munteanu
> Priority: Major
> Fix For: Starter 12
>
> Time Spent: 2h 40m
> Remaining Estimate: 0h
>
> 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.
> {code}
> 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)
> {code}
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