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https://issues.apache.org/jira/browse/SOLR-14202?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17027097#comment-17027097
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Erick Erickson commented on SOLR-14202:
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Wow, that's a lot of sleuthing! I'm going to change the title of the JIRA to
reflect this finding and perhaps get the attention of people who know about
that code.
Many thanks for your persistence here, I'd never have gone there.
Would it be possible to attach your transformer to this JIRA or are you unable
to share it? Also the DIH config (subject to the same question) would be
helpful.
> Old segments are not deleted after commit
> -----------------------------------------
>
> Key: SOLR-14202
> URL: https://issues.apache.org/jira/browse/SOLR-14202
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: SolrCloud
> Affects Versions: 8.4
> Reporter: Jörn Franke
> Priority: Major
> Attachments: eoe.zip
>
>
> The data directory of a collection is growing and growing. It seems that old
> segments are not deleted. They are only deleting during start of Solr.
> How to reproduce. Have any collection (e.g. the example collection) and start
> indexing documents. Even during the indexing the data directory is growing
> significantly - much more than expected (several magnitudes). if certain
> documents are updated (without significantly increasing the amount of data)
> the index data directory grows again several magnitudes. Even for small
> collections the needed space explodes.
> This reduces significantly if Solr is stopped and then started. During
> startup (not shutdown) Solr purges all those segments if not needed (*
> sometimes some but not a significant amount is deleted during shutdown). This
> is of course not a good workaround for normal operations.
> It does not seem to have a affect on queries (their performance do not seem
> to change).
> The configs have not changed before the upgrade and after (e.g. from Solr 8.2
> to 8.3 to 8.4, not cross major versions), so I assume it could be related to
> Solr 8.4. It may have been also in Solr 8.3 (not sure), but not in 8.2.
>
> IndexConfig is pretty much default: Lock type: native, autoCommit: 15000,
> openSearcher=false, autoSoftCommit -1 (reproducible with autoCommit 5000).
> Nevertheless, it did not happen in previous versions of Solr and the config
> did not change.
>
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