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https://issues.apache.org/jira/browse/SOLR-2700?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yonik Seeley updated SOLR-2700:
-------------------------------
Attachment: SOLR-2700.patch
Here's a draft patch.
There is a tlog.<number> file created for each commit. The javabin format is
used to serialize SolrInputDocuments.
An in-memory map of pointers into the log is kept for documents not yet
soft-committed, and the realtime-get component checks that first before using
SolrCore.getNewestSearcher().
Seems to work for getting documents not in the newest searcher so far.
Tons of stuff left to do
- the tlog files are currently in the CWD
- need to handle deletes
- need to handle flushes in a performant way
- need to implement optional fsync for durability on power-failure
- would be nice to make some of this multi-threaded for better performance
- need to implement durability (apply updates from logs on startup)
- need to implement some form of cleanup for transaction logs
> transaction logging
> -------------------
>
> Key: SOLR-2700
> URL: https://issues.apache.org/jira/browse/SOLR-2700
> Project: Solr
> Issue Type: New Feature
> Reporter: Yonik Seeley
> Attachments: SOLR-2700.patch
>
>
> A transaction log is needed for durability of updates, for a more performant
> realtime-get, and for replaying updates to recovering peers.
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