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https://issues.apache.org/jira/browse/CASSANDRA-16441?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17284014#comment-17284014
 ] 

Ekaterina Dimitrova commented on CASSANDRA-16441:
-------------------------------------------------

I wasn't able to reproduce it on my own in any way. 

But from the CircleCI log it seems as a legit issue. A node is not able to be 
brought up because of the following issue:
{code:java}
INFO [main] 2021-02-11 17:25:08,125 StorageService.java:830 - Populating token 
metadata from system tables
INFO [main] 2021-02-11 17:25:08,132 StorageService.java:824 - Token metadata: 
ERROR [main] 2021-02-11 17:25:08,153 SchemaKeyspace.java:942 - No partition 
columns found for table system_auth.network_permissions in 
system_schema.columns. This may be due to corruption or concurrent dropping and 
altering of a table. If this table is supposed to be dropped, restart cassandra 
with -Dcassandra.ignore_corrupted_schema_tables=true and run the following 
query to cleanup: "DELETE FROM system_schema.tables WHERE keyspace_name = 
'system_auth' AND table_name = 'network_permissions'; DELETE FROM 
system_schema.columns WHERE keyspace_name = 'system_auth' AND table_name = 
'network_permissions';" If the table is not supposed to be dropped, restore 
system_schema.columns sstables from backups.
ERROR [main] 2021-02-11 17:25:08,155 CassandraDaemon.java:271 - Error while 
loading schema: 
org.apache.cassandra.schema.SchemaKeyspace$MissingColumns: Columns not found in 
schema table for system_auth.network_permissions
 at 
org.apache.cassandra.schema.SchemaKeyspace.fetchColumns(SchemaKeyspace.java:998)
 at 
org.apache.cassandra.schema.SchemaKeyspace.fetchTable(SchemaKeyspace.java:962)
 at 
org.apache.cassandra.schema.SchemaKeyspace.fetchTables(SchemaKeyspace.java:921)
 at 
org.apache.cassandra.schema.SchemaKeyspace.fetchKeyspace(SchemaKeyspace.java:880)
 at 
org.apache.cassandra.schema.SchemaKeyspace.fetchKeyspacesWithout(SchemaKeyspace.java:871)
 at 
org.apache.cassandra.schema.SchemaKeyspace.fetchNonSystemKeyspaces(SchemaKeyspace.java:859)
 at org.apache.cassandra.schema.Schema.loadFromDisk(Schema.java:100)
 at org.apache.cassandra.schema.Schema.loadFromDisk(Schema.java:89)
 at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:267)
 at 
org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:676)
 at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:800)
ERROR [main] 2021-02-11 17:25:08,155 CassandraDaemon.java:822 - Exception 
encountered during startup
org.apache.cassandra.schema.SchemaKeyspace$MissingColumns: Columns not found in 
schema table for system_auth.network_permissions
 at 
org.apache.cassandra.schema.SchemaKeyspace.fetchColumns(SchemaKeyspace.java:998)
 at 
org.apache.cassandra.schema.SchemaKeyspace.fetchTable(SchemaKeyspace.java:962)
 at 
org.apache.cassandra.schema.SchemaKeyspace.fetchTables(SchemaKeyspace.java:921)
 at 
org.apache.cassandra.schema.SchemaKeyspace.fetchKeyspace(SchemaKeyspace.java:880)
 at 
org.apache.cassandra.schema.SchemaKeyspace.fetchKeyspacesWithout(SchemaKeyspace.java:871)
 at 
org.apache.cassandra.schema.SchemaKeyspace.fetchNonSystemKeyspaces(SchemaKeyspace.java:859)
 at org.apache.cassandra.schema.Schema.loadFromDisk(Schema.java:100)
 at org.apache.cassandra.schema.Schema.loadFromDisk(Schema.java:89)
 at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:267)
 at 
org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:676)
 at 
org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:800){code}
I just started a multiplexer job in a Jenkins environment.

Considering it is flaky, it seems like some race condition maybe? I didn't have 
a lot of time to dig into the log/code for more details today but felt like 
leaving here what I have as I will be out almost half next week so in case 
someone is interested and has time to look at it too in the meanwhile. 

> Snapshot_test.py DTests failing
> -------------------------------
>
>                 Key: CASSANDRA-16441
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16441
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Test/dtest/python
>            Reporter: Ekaterina Dimitrova
>            Priority: Normal
>             Fix For: 4.0-beta5, 4.0-beta
>
>
> [https://app.circleci.com/pipelines/github/ekaterinadimitrova2/cassandra/623/workflows/1c89bd58-bcd1-45dc-b923-3aba245a78a6/jobs/3451]
> These failures are also observed for other patches in Jenkins dev (weird but 
> they are not seen failing in the latest builds and they are failing with 
> completely unrelated different patches...)
> [https://jenkins-cm4.apache.org/job/Cassandra-devbranch/375/#showFailuresLink]
> [https://jenkins-cm4.apache.org/job/Cassandra-devbranch/368/]
> Jenkins dev history for one of the tests:
> https://jenkins-cm4.apache.org/job/Cassandra-devbranch/375/testReport/junit/dtest-novnode.snapshot_test/TestArchiveCommitlog/test_archive_commitlog_with_active_commitlog/history/
>  



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