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From "Wei Deng (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-11654) sstabledump is not able to properly print out SSTable that may contain historical (but "shadowed") tombstone
Date Tue, 26 Apr 2016 01:23:12 GMT
Wei Deng created CASSANDRA-11654:
------------------------------------

             Summary: sstabledump is not able to properly print out SSTable that may contain
historical (but "shadowed") tombstone
                 Key: CASSANDRA-11654
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11654
             Project: Cassandra
          Issue Type: Bug
          Components: Tools
            Reporter: Wei Deng


It is pretty trivial to reproduce. Here are the steps I used (on a single node C* 3.x cluster):

{noformat}
echo "CREATE KEYSPACE IF NOT EXISTS testks WITH replication = {'class': 'SimpleStrategy',
'replication_factor': '1'};" | cqlsh
echo "CREATE TABLE IF NOT EXISTS testks.testcf ( k int, c text, val0_int int, PRIMARY KEY
(k, c) );" | cqlsh
echo "INSERT INTO testks.testcf (k, c, val0_int) VALUES (1, 'c1', 100);" | cqlsh
echo "delete from testks.testcf where k=1 and c='c1';" | cqlsh
echo "INSERT INTO testks.testcf (k, c, val0_int) VALUES (1, 'c1', 100);" | cqlsh
nodetool flush testks testcf
echo "select * from testks.testcf;" | cqlsh
{noformat}

The last step from above will confirm that there is one live row in the testks.testcf table.
However, if you now go to the actual SSTable file directory and run sstabledump like the following,
you will see the row is still marked as deleted and no row content is shown:

{noformat}
$ sstabledump ma-1-big-Data.db
[
  {
    "partition" : {
      "key" : [ "1" ],
      "position" : 0
    },
    "rows" : [
      {
        "type" : "row",
        "position" : 18,
        "clustering" : [ "c1" ],
        "liveness_info" : { "tstamp" : 1461633248542342 },
        "deletion_info" : { "deletion_time" : 1461633248212499, "tstamp" : 1461633248 }
      }
    ]
  }
]
{noformat}

This is reproduced in both latest 3.0.5 and 3.6-snapshot (i.e. trunk as Apr 25, 2016).



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