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https://issues.apache.org/jira/browse/OAK-9774?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Angela Schreiber updated OAK-9774:
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Component/s: doc
> Content migration from Jackrabbit to Oak - Issues - Needs better docs
> ---------------------------------------------------------------------
>
> Key: OAK-9774
> URL: https://issues.apache.org/jira/browse/OAK-9774
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: doc, upgrade
> Affects Versions: 1.42.0
> Reporter: john tal
> Priority: Major
>
> (above components list dropdown for creating issues needs oak-migration as an
> entry).
> Attempting to use oak-upgrade-1.42.0 against Jackrabbit 2.20.4 to Oak 1.42.0.
> Have been following these resources:
> https://jackrabbit.apache.org/oak/docs/migration.html
> https://jackrabbit.apache.org/oak/docs/nodestore/document/rdb-document-store.html
> I have created a new schema named Oak in Oracle 12.2c and created user
> oak_user with grants to this schema.
> When attempting to run the migration jar file I see various errors depending
> on the options being used. Here is an example:
> #!/bin/bash
> java -jar ./oak-upgrade-1.42.0.jar \
> ./jcr-repo-lcl-1-draft \
> --user=OAK_USER --password=something \
> jdbc:oracle:thin:@localhost:1523:ORCL
> Output is like this:
> 18.05.2022 14:38:49.621 [main] *INFO*
> org.apache.jackrabbit.oak.segment.file.FileStore - Creating file store
> FileStoreBuilder{version=1.42.0,
> directory=./repo-admincentral-lcl-1-draft/segmentstore, blobStore=null,
> binariesInlineThreshold=16512, maxFileSize=256, segmentCacheSize=256,
> stringCacheSize=256, templateCacheSize=64,
> stringDeduplicationCacheSize=15000, templateDeduplicationCacheSize=3000,
> nodeDeduplicationCacheSize=1048576, memoryMapping=false, offHeapAccess=false,
> gcOptions=SegmentGCOptions{paused=false, estimationDisabled=false,
> gcSizeDeltaEstimation=1073741824, retryCount=5, forceTimeout=60,
> retainedGenerations=2, gcType=FULL, compactorType=CHECKPOINT_COMPACTOR}}
> 18.05.2022 14:38:49.772 [main] *INFO*
> org.apache.jackrabbit.oak.segment.file.ReadOnlyFileStore - TarMK ReadOnly
> opened: ./repo-admincentral-lcl-1-draft/segmentstore (mmap=false)
> Exception in thread "main" java.lang.IllegalStateException: Cannot start
> readonly store from empty journal
> at
> org.apache.jackrabbit.oak.segment.file.ReadOnlyRevisions.bind(ReadOnlyRevisions.java:65)
> at
> org.apache.jackrabbit.oak.segment.file.ReadOnlyFileStore.bind(ReadOnlyFileStore.java:91)
> at
> org.apache.jackrabbit.oak.segment.file.FileStoreBuilder.buildReadOnly(FileStoreBuilder.java:494)
> at
> org.apache.jackrabbit.oak.upgrade.cli.node.SegmentTarFactory.hasExternalBlobReferences(SegmentTarFactory.java:102)
> at
> org.apache.jackrabbit.oak.upgrade.cli.node.StoreFactory.hasExternalBlobReferences(StoreFactory.java:67)
> at
> org.apache.jackrabbit.oak.upgrade.cli.parser.StoreArguments.srcUsesEmbeddedDatastore(StoreArguments.java:115)
> at
> org.apache.jackrabbit.oak.upgrade.cli.OakUpgrade.migrate(OakUpgrade.java:64)
> at
> org.apache.jackrabbit.oak.upgrade.cli.OakUpgrade.main(OakUpgrade.java:48)
> Currently the values in the repository.xml are from a good/working local JCR
> repository. I assume that these values should be pointed to the existing
> legacy RDBMS data schema and not to the new OAK schema? But I am not certain.
> What would really help is a prototype set of Jackrabbit 2 repository test
> files in the Oak git repository along with a specific scripted example that
> is known to work against that prototype.
> I am unable to determine what needs changing based on the current output I am
> seeing.
> I do not see much in the way of current documentation for Oak and/or
> migrations that would help. Most of the doc examples for Oak seem to be from
> 2013. Other videos on youtube do not seem to cover Oak topics like
> migrations very well.
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