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Date: Wed, 17 Aug 2016 12:23:20 +0000 (UTC)
From: "Alex Petrov (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
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Subject: [jira] [Updated] (CASSANDRA-12374) Can't rebuild SASI index
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archived-at: Wed, 17 Aug 2016 12:23:22 -0000


     [ https://issues.apache.org/jira/browse/CASSANDRA-12374?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alex Petrov updated CASSANDRA-12374:
------------------------------------
    Status: Patch Available  (was: Open)

Fixed, submitting again.

> Can't rebuild SASI index
> ------------------------
>
>                 Key: CASSANDRA-12374
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12374
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Alex Petrov
>            Assignee: Alex Petrov
>
> There's been no real requirement for that so far. 
> As [~beobal] has pointed out, it's not a big issue, since that only could be needed when index files are lost, data corruption on disk (hardware issue) has occurred or there was a bug that'd require an index rebuild.
> During {{rebuild_index}} task, indexes are only "marked" as removed with {{SecondaryIndexManager::markIndexRemoved}} and then {{buildIndexesBlocking}} is called. However, since SASI keeps track of SSTables for the index, it's going to filter them out with {{.filter((sstable) -> !sasi.index.hasSSTable(sstable))}} in {{SASIIndexBuildingSupport}}.
> If I understand the logic correctly, we have to "invalidate" (drop data) right before we re-index them. This is also a blocker for [CASSANDRA-11990] since without it we can't have an upgrade path.
> I have a patch ready in branch, but since it's a bug, it's better to have it released earlier and for all branches affected.
> cc [~xedin]


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