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From "Patricio Echague (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-2386) sstable2json does not work on snapshot without moving the files
Date Thu, 09 Jun 2011 01:08:58 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-2386?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13046297#comment-13046297
] 

Patricio Echague commented on CASSANDRA-2386:
---------------------------------------------

The cause of this failure is that 
{code} Descriptor.java {code}
{code}
    public static Pair<Descriptor,String> fromFilename(File directory, String name)
    {
        // name of parent directory is keyspace name
        String ksname = directory.getName();
{code}

For a snapshot path like this:
{code}/var/lib/cassandra/data/Keyspace1/snapshots/1307575216104{code}

produces an output: ksname == 1307575216104 (which is wrong).
It should be "Keyspace1"

> sstable2json does not work on snapshot without moving the files
> ---------------------------------------------------------------
>
>                 Key: CASSANDRA-2386
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2386
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Tools
>         Environment: Redhat Linux
>            Reporter: Aslak Dirdal
>            Assignee: Patricio Echague
>            Priority: Minor
>             Fix For: 0.8.1
>
>
> sstable2json ../data/MyKeyspace/snapshots/1301066898131-mysnapshot/dockeys-10-Data.db
> {
>   Exception in thread "main" java.lang.NullPointerException: Unknown ColumnFamily dockeys
in keyspace 1301066898131-mysnapshot
>         at org.apache.cassandra.config.DatabaseDescriptor.getComparator(DatabaseDescriptor.java:1169)
>         at org.apache.cassandra.db.ColumnFamily.create(ColumnFamily.java:68)
>         at org.apache.cassandra.io.SSTableReader.makeColumnFamily(SSTableReader.java:582)
>         at org.apache.cassandra.db.ColumnFamilySerializer.deserializeFromSSTable(ColumnFamilySerializer.java:158)
>         at org.apache.cassandra.io.IteratingRow.getColumnFamily(IteratingRow.java:79)
>         at org.apache.cassandra.tools.SSTableExport.serializeRow(SSTableExport.java:110)
>         at org.apache.cassandra.tools.SSTableExport.export(SSTableExport.java:270)
>         at org.apache.cassandra.tools.SSTableExport.export(SSTableExport.java:302)
>         at org.apache.cassandra.tools.SSTableExport.export(SSTableExport.java:326)
>         at org.apache.cassandra.tools.SSTableExport.main(SSTableExport.java:370)
> sstable2json seem to think that the foldername "1301066898131-mysnapshot" is the Keyspace
name.
> Moving the *.db files to a folder with the same name as the Keyspace is a workaround.

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