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Sylvain Lebresne commented on CASSANDRA-1130: --------------------------------------------- Sorry but I don't seem able to reproduce this. I've tried a simple test, inserting supercolumns with 100 colums in them, each having a TTL (that I varied from 10 seconds to like 3 minutes). I typically let it insert over 10000 super columns (so around 1 millions ttled columns) and kill it. I run cassandra again, let it compact, kill it again, run again, start insertion again, etc... I tried like 20 times, no crashes whatsoever. I've tried with a trunk of a week or so ago and then with trunk from 1 hour ago. Sounds like you have no problem reproducing on your side so .. I don't know. If you could somehow come up with a unit test that make it crashes or a small script test that triggers it, that would be amazing. > Cassandra throws Exceptions at startup when using TTL in SuperColumns > --------------------------------------------------------------------- > > Key: CASSANDRA-1130 > URL: https://issues.apache.org/jira/browse/CASSANDRA-1130 > Project: Cassandra > Issue Type: Bug > Components: Core > Affects Versions: 0.7 > Reporter: Jignesh Dhruv > Assignee: Sylvain Lebresne > Fix For: 0.7 > > > Hello, > I am trying to use TTL (timeToLive) feature in SuperColumns. > My usecase is: > - I have a SuperColumn and 3 subcolumns. > - I try to expire data after 60 seconds. > While Cassandra is up and running, I am successfully able to push and read > data without any problems. Data compaction and all occurs fine. After > inserting say about 100000 records, I stop Cassandra while data is still > coming. > On startup Cassandra throws an exception and won't start up. (This happens 1 > in every 3 times). Exception varies like: > - EOFException while reading data > - negative value encountered exception > - Heap Space Exception > Cassandra simply won't start up. > Again I get this problem only when I use TTL with SuperColumns. There are no > issues with using TTL with regular Columns. > I tried to diagnose the problem and it seems to happen on startup when it > sees a Column that is marked Deleted and its trying to read data. Its off by > some bytes and hence all these exceptions. > Caused by: java.io.IOException: Corrupt (negative) value length encountered > at > org.apache.cassandra.utils.FBUtilities.readByteArray(FBUtilities.java:317) > at > org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:84) > at > org.apache.cassandra.db.SuperColumnSerializer.deserialize(SuperColumn.java:336) > at > org.apache.cassandra.db.SuperColumnSerializer.deserialize(SuperColumn.java:285) > at > org.apache.cassandra.db.filter.SSTableSliceIterator$ColumnGroupReader.getNextBlock(SSTableSliceIterator.java:235) > at > org.apache.cassandra.db.filter.SSTableSliceIterator$ColumnGroupReader.pollColumn(SSTableSliceIterator.java:195) > ... 18 more > Let me know if you need more information. > Thanks, > Jignesh -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.