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https://issues.apache.org/jira/browse/CASSANDRA-8865?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14337126#comment-14337126
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Constance Eustace commented on CASSANDRA-8865:
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Our doublequoted DROP statement seems to have successfully removed the traces
of the old index from the schema... but we think the filesystem artifacts of
the index are still around:
so in the definition_bundle keyspace after SSTable upgrade, and then we dropped
the definition_bundle__BundleDefSkuIDX index with a double-quoted drop and then
recreated the index...
lm@ip-172-16-10-50:/raid0/var/lib/cassandra/data/definition_bundle$ ls -la
total 12
drwxr-xr-x 7 cassandra cassandra 133 Feb 25 16:32 .
drwxr-xr-x 31 cassandra cassandra 4096 Feb 20 20:44 ..
drwxr-xr-x 3 cassandra cassandra 22 Feb 25 18:33 blob
drwxr-xr-x 3 cassandra cassandra 4096 Feb 25 19:54 entity_bundledef
drwxr-xr-x 2 cassandra cassandra 4096 Feb 25 20:23
entity_bundledef-e6be57cfd0023d7dba582d4c577d6d61
drwxr-xr-x 3 cassandra cassandra 22 Feb 25 18:33 relation
drwxr-xr-x 3 cassandra cassandra 22 Feb 25 18:33 relationbackref
In this directory we still see the case-sensitive artifacts of the index:
arlm@ip-172-16-10-50:/raid0/var/lib/cassandra/data/definition_bundle/entity_bundledef$
ls -la
total 108
drwxr-xr-x 3 cassandra cassandra 4096 Feb 25 19:54 .
drwxr-xr-x 7 cassandra cassandra 133 Feb 25 16:32 ..
-rw-r--r-- 1 cassandra cassandra 43 Feb 24 08:54
definition_bundle-entity_bundledef.definition_bundle__BundleDefSkuIDX-jb-1-CompressionInfo.db
-rw-r--r-- 1 cassandra cassandra 123 Feb 24 08:54
definition_bundle-entity_bundledef.definition_bundle__BundleDefSkuIDX-jb-1-Data.db
-rw-r--r-- 1 cassandra cassandra 16 Feb 24 08:54
definition_bundle-entity_bundledef.definition_bundle__BundleDefSkuIDX-jb-1-Filter.db
-rw-r--r-- 1 cassandra cassandra 30 Feb 24 08:54
definition_bundle-entity_bundledef.definition_bundle__BundleDefSkuIDX-jb-1-Index.db
-rw-r--r-- 1 cassandra cassandra 4513 Feb 24 08:54
definition_bundle-entity_bundledef.definition_bundle__BundleDefSkuIDX-jb-1-Statistics.db
-rw-r--r-- 1 cassandra cassandra 116 Feb 24 08:54
definition_bundle-entity_bundledef.definition_bundle__BundleDefSkuIDX-jb-1-Summary.db
-rw-r--r-- 1 cassandra cassandra 79 Feb 24 08:54
definition_bundle-entity_bundledef.definition_bundle__BundleDefSkuIDX-jb-1-TOC.txt
-rw-r--r-- 1 cassandra cassandra 43 Feb 25 18:33
definition_bundle-entity_bundledef-ka-3-CompressionInfo.db
-rw-r--r-- 1 cassandra cassandra 1173 Feb 25 18:33
definition_bundle-entity_bundledef-ka-3-Data.db
-rw-r--r-- 1 cassandra cassandra 9 Feb 25 18:33
definition_bundle-entity_bundledef-ka-3-Digest.sha1
-rw-r--r-- 1 cassandra cassandra 208 Feb 25 18:33
definition_bundle-entity_bundledef-ka-3-Filter.db
-rw-r--r-- 1 cassandra cassandra 55 Feb 25 18:33
definition_bundle-entity_bundledef-ka-3-Index.db
-rw-r--r-- 1 cassandra cassandra 4499 Feb 25 18:33
definition_bundle-entity_bundledef-ka-3-Statistics.db
-rw-r--r-- 1 cassandra cassandra 191 Feb 25 18:33
definition_bundle-entity_bundledef-ka-3-Summary.db
-rw-r--r-- 1 cassandra cassandra 91 Feb 25 18:33
definition_bundle-entity_bundledef-ka-3-TOC.txt
-rw-r--r-- 1 cassandra cassandra 43 Feb 25 19:54
definition_bundle-entity_bundledef-ka-4-CompressionInfo.db
-rw-r--r-- 1 cassandra cassandra 1163 Feb 25 19:54
definition_bundle-entity_bundledef-ka-4-Data.db
-rw-r--r-- 1 cassandra cassandra 9 Feb 25 19:54
definition_bundle-entity_bundledef-ka-4-Digest.sha1
-rw-r--r-- 1 cassandra cassandra 16 Feb 25 19:54
definition_bundle-entity_bundledef-ka-4-Filter.db
-rw-r--r-- 1 cassandra cassandra 55 Feb 25 19:54
definition_bundle-entity_bundledef-ka-4-Index.db
-rw-r--r-- 1 cassandra cassandra 4494 Feb 25 19:54
definition_bundle-entity_bundledef-ka-4-Statistics.db
-rw-r--r-- 1 cassandra cassandra 191 Feb 25 19:54
definition_bundle-entity_bundledef-ka-4-Summary.db
-rw-r--r-- 1 cassandra cassandra 91 Feb 25 19:54
definition_bundle-entity_bundledef-ka-4-TOC.txt
drwxr-xr-x 3 cassandra cassandra 36 Feb 25 18:33 snapshots
in this directory we see the lowercased artifacts of the index...
carlm@ip-172-16-10-50:/raid0/var/lib/cassandra/data/definition_bundle/entity_bundledef-e6be57cfd0023d7dba582d4c577d6d61$
ls -la
total 76
drwxr-xr-x 2 cassandra cassandra 4096 Feb 25 20:23 .
drwxr-xr-x 7 cassandra cassandra 133 Feb 25 16:32 ..
-rw-r--r-- 1 cassandra cassandra 43 Feb 25 20:09
definition_bundle-entity_bundledef.definition_bundle__bundledefskuidx-ka-1-CompressionInfo.db
-rw-r--r-- 1 cassandra cassandra 164 Feb 25 20:09
definition_bundle-entity_bundledef.definition_bundle__bundledefskuidx-ka-1-Data.db
-rw-r--r-- 1 cassandra cassandra 10 Feb 25 20:09
definition_bundle-entity_bundledef.definition_bundle__bundledefskuidx-ka-1-Digest.sha1
-rw-r--r-- 1 cassandra cassandra 16 Feb 25 20:09
definition_bundle-entity_bundledef.definition_bundle__bundledefskuidx-ka-1-Filter.db
-rw-r--r-- 1 cassandra cassandra 60 Feb 25 20:09
definition_bundle-entity_bundledef.definition_bundle__bundledefskuidx-ka-1-Index.db
-rw-r--r-- 1 cassandra cassandra 4570 Feb 25 20:09
definition_bundle-entity_bundledef.definition_bundle__bundledefskuidx-ka-1-Statistics.db
-rw-r--r-- 1 cassandra cassandra 116 Feb 25 20:09
definition_bundle-entity_bundledef.definition_bundle__bundledefskuidx-ka-1-Summary.db
-rw-r--r-- 1 cassandra cassandra 91 Feb 25 20:09
definition_bundle-entity_bundledef.definition_bundle__bundledefskuidx-ka-1-TOC.txt
-rw-r--r-- 1 cassandra cassandra 43 Feb 25 20:23
definition_bundle-entity_bundledef.definition_bundle__bundledefskuidxtest-ka-1-CompressionInfo.db
-rw-r--r-- 1 cassandra cassandra 135 Feb 25 20:23
definition_bundle-entity_bundledef.definition_bundle__bundledefskuidxtest-ka-1-Data.db
-rw-r--r-- 1 cassandra cassandra 9 Feb 25 20:23
definition_bundle-entity_bundledef.definition_bundle__bundledefskuidxtest-ka-1-Digest.sha1
-rw-r--r-- 1 cassandra cassandra 16 Feb 25 20:23
definition_bundle-entity_bundledef.definition_bundle__bundledefskuidxtest-ka-1-Filter.db
-rw-r--r-- 1 cassandra cassandra 16 Feb 25 20:23
definition_bundle-entity_bundledef.definition_bundle__bundledefskuidxtest-ka-1-Index.db
-rw-r--r-- 1 cassandra cassandra 4548 Feb 25 20:23
definition_bundle-entity_bundledef.definition_bundle__bundledefskuidxtest-ka-1-Statistics.db
-rw-r--r-- 1 cassandra cassandra 74 Feb 25 20:23
definition_bundle-entity_bundledef.definition_bundle__bundledefskuidxtest-ka-1-Summary.db
-rw-r--r-- 1 cassandra cassandra 91 Feb 25 20:23
definition_bundle-entity_bundledef.definition_bundle__bundledefskuidxtest-ka-1-TOC.txt
Our suspicion is that these are dangling remains, since the newly recreated
index files are lowercase. Can we manually delete the case-sensitive artifacts
safely?
> DROP INDEX name case sensitivity causing errors in cass upgrade 2.0.10 to
> 2.1.3
> -------------------------------------------------------------------------------
>
> Key: CASSANDRA-8865
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8865
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Environment: Amazon, single node, ubuntu 14.04, jdk 7
> Reporter: Constance Eustace
>
> We are upgrading our dev cluster.
> The indexes are behaving very strangely.
> create index definition_bundle__BundleDefSkuIDXTest on
> definition_bundle.entity_bundledef(e_entlinks) ;
> definition_bundle> select column_name, index_name, index_options, index_type,
> component_index from system.schema_columns where keyspace_name =
> 'definition_bundle' and columnfamily_name = 'entity_bundledef';
> column_name | index_name | index_options |
> index_type | component_index
> -------------+----------------------------------------+---------------+------------+-----------------
> bundle_sku | definition_bundle__BundleDefSkuIDX | {} |
> COMPOSITES | 1
> e_entid | null | null |
> null | null
> e_entlinks | definition_bundle__bundledefskuidxtest | {} |
> COMPOSITES | 1
> NOTICE THE AUTO-DOWNCASE of our newly created index. The index that already
> existed is NOT AUTO-DOWNCASED. I don't know if this is recent or not.
> We cannot drop the mixed case index. Nodetool index reconstruction did not
> work. Indexes are doing very weird things.
> Hm. UPDATE:
> This did successfully delete the index:
> drop index "definition_bundle__BundleDefSkuIDX";
> Anyway, it looks like there is some upcase/downcase assumptions not being
> properly done.... somewhere, either in upgrades or similar stuff.
> We will probably drop our indexes and recreate them.
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