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https://issues.apache.org/jira/browse/SOLR-5211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16496774#comment-16496774
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Mikhail Khludnev edited comment on SOLR-5211 at 5/31/18 4:08 PM:
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This what we discussed at Vegas, [~hossman]. Let's treat all docs (even
childfree) parents. Here are pros, and cons:
(+) mixing parents and childfree (not yet in tests)
(+) overwriting childfree by parent (in tests)
(-) for those who run childfree-only index its waste index space for storing
useless {{\_root_}} column, as a workaround they can enable {{<updateHandler
class="solr.LegacyDirectUpdateHandler">}} (I'm not happy about this name).
* atomic updates for parents is not there but just possible
I'd like to tweak the tests a little. Meanwhile, the questions are:
- Are we going this way?
- what release strategy is worth to take? eg make {{ParentAlwaysDUH2}} optional
in 7.4. but default in 8.0 or turn it by default right now
was (Author: mkhludnev):
This what we discussed at Vegas, [~hossman]. Let's treat all docs (even
childfree) parents. Here are pros, and cons:
(+) mixing parents and childfree (not yet in tests)
(+) overwriting childfree by parent (in tests)
(-) for those who run childfree-only index its waste index space for storing
useless {{\_root_}} column, as a workaround they can enable {{ <updateHandler
class="solr.LegacyDirectUpdateHandler">}} (I'm not happy about this name).
* atomic updates for parents is not there but just possible
I'd like to tweak the tests a little. Meanwhile, the questions are:
- Are we going this way?
- what release strategy is worth to take? eg make {{ParentAlwaysDUH2}} optional
in 7.4. but default in 8.0 or turn it by default right now
> updating parent as childless makes old children orphans
> -------------------------------------------------------
>
> Key: SOLR-5211
> URL: https://issues.apache.org/jira/browse/SOLR-5211
> Project: Solr
> Issue Type: Sub-task
> Components: update
> Affects Versions: 4.5, 6.0
> Reporter: Mikhail Khludnev
> Assignee: Mikhail Khludnev
> Priority: Major
> Attachments: SOLR-5211.patch
>
>
> if I have parent with children in the index, I can send update omitting
> children. as a result old children become orphaned.
> I suppose separate \_root_ fields makes much trouble. I propose to extend
> notion of uniqueKey, and let it spans across blocks that makes updates
> unambiguous.
> WDYT? Do you like to see a test proves this issue?
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