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https://issues.apache.org/jira/browse/OAK-6081?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15994281#comment-15994281
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Chetan Mehrotra commented on OAK-6081:
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This tooling can be implemented in following phases
# v0 - Target here would be to have enable support for doing async indexing as
is done currently via oak-run. In this phase we would not be changing indexing
logic much but would just allow the async indexing run done via oak-run
# v1 - Indexer creates index files only on file system and in the end the files
are copied to repo
# v2 - Support interruption i.e. if indexing gets killed in between it can
start from last state
# v3 - multithreaded traversal
> Indexing tooling via oak-run
> ----------------------------
>
> Key: OAK-6081
> URL: https://issues.apache.org/jira/browse/OAK-6081
> Project: Jackrabbit Oak
> Issue Type: New Feature
> Components: indexing, run
> Reporter: Chetan Mehrotra
> Assignee: Chetan Mehrotra
> Fix For: 1.8
>
>
> To enable better management for indexing related operation specially around
> reindexing indexes on large repository setup we should implement some tooling
> as part of oak-run
> The tool would support
> # *Resumable tarversal* - It should be able to reindex large repo with
> resumable traversal such that even if indexing breaks due to some issue it
> can resume from last state (OAK-5833)
> # *Multithreaded traversal* - Current indexing is single threaded and hence
> for large repo it can take long time. Plan here is to support multi threaded
> indexing where each thread can be assigned a part of repository tree to index
> and in the end the indexes are merged
> # For DocumentNodeStore setup it would be possible to connect oak-run to a
> live cluster and it would take care of indexing -> storing index on disk ->
> merging index -> importing it back at end. This would ensure that live setup
> faces minimum disruption and is not loaded much
> # For SegementNodeStore setup it would be possible to index on a cloned setup
> and then provide a way to copy the index back
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