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https://issues.apache.org/jira/browse/SOLR-13813?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16987068#comment-16987068
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ASF subversion and git services commented on SOLR-13813:
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Commit 30b49b6d6017823280c3ca27e792cd88bf47607d in lucene-solr's branch
refs/heads/jira/SOLR-13101 from Yonik Seeley
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=30b49b6 ]
SOLR-13813: change test sleeps to latches (#1054)
> Shared storage online split support
> -----------------------------------
>
> Key: SOLR-13813
> URL: https://issues.apache.org/jira/browse/SOLR-13813
> Project: Solr
> Issue Type: Sub-task
> Reporter: Yonik Seeley
> Priority: Major
> Time Spent: 1h
> Remaining Estimate: 0h
>
> The strategy for online shard splitting is the same as that for normal (non
> SHARED shards.)
> During a split, the leader will forward updates to sub-shard leaders, those
> updates will be buffered by the transaction log while the split is in
> progress, and then the buffered updates are replayed.
> One change that was added was to push the local index to blob store after
> buffered updates are applied (but before it is marked as ACTIVE):
> See
> https://github.com/apache/lucene-solr/commit/fe17c813f5fe6773c0527f639b9e5c598b98c7d4#diff-081b7c2242d674bb175b41b6afc21663
> This issue is about adding tests and ensuring that online shard splitting
> (while updates are flowing) works reliably.
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