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From "Jim Witschey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10599) Delete operation not deleting sometimes by Trigger augment method
Date Fri, 06 Nov 2015 16:36:27 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14993912#comment-14993912
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Jim Witschey commented on CASSANDRA-10599:
------------------------------------------

Let me make sure I understand: You have a trigger containing the code in your report. It fails.
When you replace the {{delete}} with an {{add}}, it works. Is that correct? How frequently
does it fail?

> Delete operation not deleting sometimes  by Trigger augment method
> ------------------------------------------------------------------
>
>                 Key: CASSANDRA-10599
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10599
>             Project: Cassandra
>          Issue Type: Bug
>          Components: CQL, Tools
>         Environment: CentOS 6.6 Cassandra 2.2.2
>            Reporter: Ashraful Islam
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> I was trying to delete a row from one table when another table's row with the same primary
key has been deleted
> {code:title=DeleteToDelete.java|borderStyle=solid}
> @Override
> public Collection<Mutation> augment(ByteBuffer key, ColumnFamily update) {
> 	String keySpace = properties.getProperty("keyspace");
> 	String columnFamily = properties.getProperty("table");
> 	if (!update.deletionInfo().isLive()) {
> 		CFMetaData cfMetaData = Schema.instance.getCFMetaData(keySpace, columnFamily);
> 		for (ColumnDefinition columnDefinition : cfMetaData.allColumns()) {
> 			Mutation mutation = new Mutation(keySpace, key);
> 			mutation.delete(columnFamily, CellNames.simpleSparse(columnDefinition.name), System.currentTimeMillis());
> 		}
> 	}
> }
> {code}
> *This code is not deleting row with the same key that have been inserted with insert
into values command.*
> *but if i insert the value by replacing*
> {code}
> mutation.delete(columnFamily, CellNames.simpleSparse(columnDefinition.name), System.currentTimeMillis());
> {code}
> *by* 
> {code}
> mutation.add(columnFamily, CellNames.simpleSparse(columnDefinition.name), ByteBufferUtil.bytes(35),
System.currentTimeMillis());
> {code}
> *in the above code, Then the value is deleted with the trigger*



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