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https://issues.apache.org/jira/browse/SOLR-5795?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13958070#comment-13958070
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Hoss Man commented on SOLR-5795:
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bq. Hoss, instead of slice.getLeader(), you should use
ZkStateReader.getLeaderRetry method.
That was actually a deliberate choice:
These deletes are low priority and will re-occur frequently - so it's fine to
abort quickly as a No-Op, no need to block waiting for a leader. These leader
checks will also happen very often and on every node very often - so we don't
want to be hammering Zk with active leader checks/retries in a potential high
load / leader election / outage situation. The cached ClusterState info is
"good enough" -- even if it's stale, the worst case scenario is that multiple
nodes trigger a handfull redundant deletes, or the deletes are skipped for one
cycle -- but the next one will take care of it.
> Option to periodically delete docs based on an expiration field -- or ttl
> specified when indexed.
> -------------------------------------------------------------------------------------------------
>
> Key: SOLR-5795
> URL: https://issues.apache.org/jira/browse/SOLR-5795
> Project: Solr
> Issue Type: New Feature
> Reporter: Hoss Man
> Assignee: Hoss Man
> Fix For: 4.8, 5.0
>
> Attachments: SOLR-5795.patch, SOLR-5795.patch, SOLR-5795.patch,
> SOLR-5795.patch, SOLR-5795.patch, SOLR-5795.patch
>
>
> A question I get periodically from people is how to automatically remove
> documents from a collection at a certain time (or after a certain amount of
> time).
> Excluding from search results using a filter query on a date field is
> trivial, but you still have to periodically send a deleteByQuery to clean up
> those older "expired" documents. And in the case where you want all
> documents to auto-expire some fixed amount of time when they were indexed,
> you still have to setup a simple UpdateProcessorto set that expiration date.
> So i've been thinking it would be nice if there was a simple way to configure
> solr to do it all for you.
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