[CASSANDRA-6041] AssertionError in Tracing

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 2.0.1
• Severity: Low
• Since Version: 2.0.0
• Assignee: Sylvain Lebresne
• Reporter: Sylvain Lebresne

Authors

Sylvain Lebresne

Reviewers

Aleksey Yeschenko

• Created: 17/Sep/13 13:01
• Updated: 16/Apr/19 09:32
• Resolved: 17/Sep/13 13:34

Description

Tracing in 2.0.0 can throw the following:

ERROR [TracingStage:1] 2013-09-17 14:38:41,486 CassandraDaemon.java (line 185) Exception in thread Thread[TracingStage:1,5,main]
java.lang.AssertionError: Added column does not sort as the last column
        at org.apache.cassandra.db.ArrayBackedSortedColumns.addColumn(ArrayBackedSortedColumns.java:115)
        at org.apache.cassandra.db.ColumnFamily.addColumn(ColumnFamily.java:116)
        at org.apache.cassandra.tracing.Tracing.addParameterColumns(Tracing.java:101)
        at org.apache.cassandra.tracing.Tracing$2.runMayThrow(Tracing.java:210)
        at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:724)

That's because addParamaterColumns will insert cell with names we don't know in advance, so we can't use ArrayBackedSortedColumns. Attaching patch to switch to TreeMapBackedSortedColumns.