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Steve Rowe commented on SOLR-12357: ----------------------------------- With this issue committed, shouldn't the bullet below be removed from the ref guide's TRA page?: {quote} h3. Improvement Possibilities [...] * New collections ought to be created preemptively, as an option, to avoid delaying a document that does not yet have a collection to go to.{quote} > TRA: Pre-emptively create next collection > ------------------------------------------ > > Key: SOLR-12357 > URL: https://issues.apache.org/jira/browse/SOLR-12357 > Project: Solr > Issue Type: Sub-task > Security Level: Public(Default Security Level. Issues are Public) > Components: SolrCloud > Reporter: David Smiley > Assignee: David Smiley > Priority: Major > Fix For: 7.5 > > Attachments: SOLR-12357.patch > > Time Spent: 9.5h > Remaining Estimate: 0h > > When adding data to a Time Routed Alias (TRA), we sometimes need to create > new collections. Today we only do this synchronously – on-demand when a > document is coming in. But this can add delays as the documents inbound are > held up for a collection to be created. And, there may be a problem like a > lack of resources (e.g. ample SolrCloud nodes with space) that the policy > framework defines. Such problems could be rectified sooner rather than later > assume there is log alerting in place (definitely out of scope here). > Pre-emptive TRA collection needs a time window configuration parameter, > perhaps named something like "preemptiveCreateWindowMs". If a document's > timestamp is within this time window _from the end time of the head/lead > collection_ then the collection can be created pre-eptively. If no data is > being sent to the TRA, no collections will be auto created, nor will it > happen if older data is being added. It may be convenient to effectively > limit this time setting to the _smaller_ of this value and the TRA interval > window, which I think is a fine limitation. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org