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https://issues.apache.org/jira/browse/SOLR-5944?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14943573#comment-14943573
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Yonik Seeley commented on SOLR-5944:
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Whew... this seems really tricky. I've been diving into the Chaos* fails
recently, and at first blush it seems like this would add more complexity to
recovery as well (log replays, peer sync, etc?) What are the implications
there?
{quote}
If, upon receiving the update on a replica, the doc version on index/tlog is
not the "old version" (that means we've missed in update in between to the doc,
because of reordering), then we can write this update to tlog (and mark it
somehow as something we're waiting on) but not actually update the doc in the
index until we receive the update whose update "old version" is what we are
expecting. After doing this (for all pending updates for the doc), we could
unmark the documents.
{quote}
It seems like we can't return success on an update until that update has
actually been applied?
Also, what happens to this prevPointer you are writing to the tlog if there is
a commit in-between?
Another approach would be to get rid of update reordering... i.e. ensure that
updates are not reordered when sending from leader to replicas.
> Support updates of numeric DocValues
> ------------------------------------
>
> Key: SOLR-5944
> URL: https://issues.apache.org/jira/browse/SOLR-5944
> Project: Solr
> Issue Type: New Feature
> Reporter: Ishan Chattopadhyaya
> Assignee: Shalin Shekhar Mangar
> Attachments: SOLR-5944.patch, SOLR-5944.patch, SOLR-5944.patch,
> SOLR-5944.patch, SOLR-5944.patch, SOLR-5944.patch, SOLR-5944.patch,
> SOLR-5944.patch, SOLR-5944.patch, SOLR-5944.patch, SOLR-5944.patch,
> SOLR-5944.patch
>
>
> LUCENE-5189 introduced support for updates to numeric docvalues. It would be
> really nice to have Solr support this.
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