[jira] [Created] (OAK-1921) Backup: "Attempt to read external blob" error

["Thomas Mueller (JIRA)" <ji...@apache.org>]

Thomas Mueller created OAK-1921:
-----------------------------------

             Summary: Backup: "Attempt to read external blob" error
                 Key: OAK-1921
                 URL: https://issues.apache.org/jira/browse/OAK-1921
             Project: Jackrabbit Oak
          Issue Type: Bug
          Components: segmentmk
    Affects Versions: 1.0.1, 1.0, 1.0.2
            Reporter: Thomas Mueller


I tried to backup a segmentstore (with an external BlobStore) using

{noformat}
java -mx8g -jar oak-run-1.0.2-SNAPSHOT.jar backup segmentstore s2
{noformat}

and got:

{noformat}
Attempt to read external blob with blobId
[c184d2a3f1dbc709004a45ae6c5df7624c2ae653#32768] without specifying
BlobStore
  at
org.apache.jackrabbit.oak.plugins.segment.SegmentBlob.getReference(SegmentB
lob.java:118)
  at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeBlob(SegmentWr
iter.java:706)
  at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeProperty(Segme
ntWriter.java:808)
  at
org.apache.jackrabbit.oak.plugins.segment.SegmentWriter.writeProperty(Segme
ntWriter.java:796)
{noformat}

There are two options:

1) Adjust the backup code to work like compaction does, i.e. leave
external blobs as-is and perhaps output a message that informs the
user about the need to use a different mechanism to back up the
BlobStore contents

2) Add command line options for configuring the BlobStore to be used
for accessing external blobs.



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