[
https://issues.apache.org/jira/browse/SOLR-7820?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Timothy Potter updated SOLR-7820:
---------------------------------
Summary: IndexFetcher should calculate ahead of time how much space is
needed for full snapshot based recovery and cleanly abort instead of trying and
running out of space on a node (was: IndexFetcher should delete the current
index directory before downloading the new index when isFullCopyNeeded==true)
> IndexFetcher should calculate ahead of time how much space is needed for full
> snapshot based recovery and cleanly abort instead of trying and running out
> of space on a node
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: SOLR-7820
> URL: https://issues.apache.org/jira/browse/SOLR-7820
> Project: Solr
> Issue Type: Improvement
> Components: replication (java)
> Reporter: Timothy Potter
>
> When a replica is trying to recover and it's IndexFetcher decides it needs to
> pull the full index from a peer (isFullCopyNeeded == true), then the existing
> index directory should be deleted before the full copy is started to free up
> disk to pull a fresh index, otherwise the server will potentially need 2x the
> disk space (old + incoming new). Currently, the IndexFetcher removes the
> index directory after the new is downloaded; however, once the fetcher
> decides a full copy is needed, what is the value of the existing index? It's
> clearly out-of-date and should not serve queries. Since we're deleting data
> preemptively, maybe this should be an advanced configuration property, only
> to be used by those that are disk-space constrained (which I'm seeing more
> and more with people deploying high-end SSDs - they typically don't have 2x
> the disk capacity required by an index).
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
