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https://issues.apache.org/jira/browse/CASSANDRA-13005?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15725169#comment-15725169
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Christian Esken edited comment on CASSANDRA-13005 at 12/6/16 2:05 PM:
----------------------------------------------------------------------

Cassandra version is v3.0.9. When running sstabledump (from either 3.0.9 or 
trunk), we get a NullPointer Exception. Here 

{code}
~/apache-cassandra-3.9/tools/bin/sstabledump /appdata/mc-53346-big-Data.db
Exception in thread "main" java.lang.NullPointerException
        at 
org.apache.cassandra.utils.FBUtilities.newPartitioner(FBUtilities.java:429)
        at 
org.apache.cassandra.tools.SSTableExport.metadataFromSSTable(SSTableExport.java:104)
        at org.apache.cassandra.tools.SSTableExport.main(SSTableExport.java:180)
{code}

FBUtilities.java:429 is the following line, and validationMetadata == null:
bq. if (validationMetadata.partitioner.endsWith("LocalPartitioner"))



was (Author: cesken):
Cassandra version is v3.0.9. When running sstabledump (from either 3.0.9 or 
3.9), we get a NullPointer Exception.

{code}
~/apache-cassandra-3.9/tools/bin/sstabledump /appdata/mc-53346-big-Data.db
Exception in thread "main" java.lang.NullPointerException
        at 
org.apache.cassandra.utils.FBUtilities.newPartitioner(FBUtilities.java:429)
        at 
org.apache.cassandra.tools.SSTableExport.metadataFromSSTable(SSTableExport.java:104)
        at org.apache.cassandra.tools.SSTableExport.main(SSTableExport.java:180)
{code}


> Cassandra TWCS is not removing fully expired tables
> ---------------------------------------------------
>
>                 Key: CASSANDRA-13005
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13005
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Compaction
>         Environment: Cassandra 3.0.9
> Java HotSpot(TM) 64-Bit Server VM version 25.112-b15 (Java version 
> 1.8.0_112-b15)
> Linux 3.16
>            Reporter: Christian Esken
>         Attachments: sstablemetadata-empty-type-that-is-3GB.txt
>
>
> We have a table where all columns are stored with TTL of maximum 4 hours. 
> Usually TWCS compaction properly removes  expired data via tombstone 
> compaction and also removes fully expired tables. The number of SSTables is 
> nearly constant since weeks. Good.
> The problem:  Suddenly TWCS does not remove old SSTables any longer. They are 
> being recreated frequently (judging form the file creation timestamp), but 
> the number of tables is growing. Analysis and actions take so far:
> - sstablemetadata shows strange data, as if the table is completely empty.
> - sstabledump throws an Exception when running it on such a SSTable
> - Even triggering a manual major compaction will not remove the old 
> SSTable's. To be more precise: They are recreated with new id and timestamp 
> (not sure whether they are identical as I cannot inspect content due to the 
> sstabledump crash)



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