Did you upgrade from an earlier version? Did you read NEWS.txt? On Tue, Mar 15, 2011 at 4:21 PM, Sanjeev Kulkarni <sanj...@locomatix.com> wrote: > Hey guys, > Have started facing a crash in my cassandra while reading. Here are the > details. > 1. single node. replication factor of 1 > 2. Cassandra version 0.7.3 > 3. Single keyspace. 5 column families. > 4. No super columns > 5. My data model is a little bit skewed. It results in having several small > rows and one really big row(lots of columns). cfstats say that on one column > family the Compacted row maximum size is 5960319812. Not sure if this is the > problem. > 6. Starting cassandra has no issues. I give a max heap size of 6G. > 7. I then start reading a bunch of rows including the really long row. After > some point cassandra starts crashing. > The log is > ERROR [ReadStage:30] 2011-03-15 16:52:27,598 AbstractCassandraDaemon.java > (line 114) Fatal exception in thread Thread[ReadStage:30,5,main] > java.lang.AssertionError > at > org.apache.cassandra.db.columniterator.SSTableNamesIterator.readIndexedColumns(SSTableNamesIterator.java:180) > at > org.apache.cassandra.db.columniterator.SSTableNamesIterator.read(SSTableNamesIterator.java:134) > at > org.apache.cassandra.db.columniterator.SSTableNamesIterator.<init>(SSTableNamesIterator.java:72) > at > org.apache.cassandra.db.filter.NamesQueryFilter.getSSTableColumnIterator(NamesQueryFilter.java:59) > at > org.apache.cassandra.db.filter.QueryFilter.getSSTableColumnIterator(QueryFilter.java:80) > at > org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1311) > at > org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1203) > at > org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1131) > at org.apache.cassandra.db.Table.getRow(Table.java:333) > at > org.apache.cassandra.db.SliceByNamesReadCommand.getRow(SliceByNamesReadCommand.java:60) > at > org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow(StorageProxy.java:453) > at > org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30) > at > java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) > at java.lang.Thread.run(Thread.java:662) > ERROR [ReadStage:13] 2011-03-15 16:52:27,600 AbstractCassandraDaemon.java > (line 114) Fatal exception in thread Thread[ReadStage:13,5,main] > java.lang.AssertionError > at > org.apache.cassandra.db.columniterator.SSTableNamesIterator.readIndexedColumns(SSTableNamesIterator.java:180) > at > org.apache.cassandra.db.columniterator.SSTableNamesIterator.read(SSTableNamesIterator.java:134) > at > org.apache.cassandra.db.columniterator.SSTableNamesIterator.<init>(SSTableNamesIterator.java:72) > at > org.apache.cassandra.db.filter.NamesQueryFilter.getSSTableColumnIterator(NamesQueryFilter.java:59) > at > org.apache.cassandra.db.filter.QueryFilter.getSSTableColumnIterator(QueryFilter.java:80) > at > org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1311) > at > org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1203) > at > org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1131) > at org.apache.cassandra.db.Table.getRow(Table.java:333) > at > org.apache.cassandra.db.SliceByNamesReadCommand.getRow(SliceByNamesReadCommand.java:60) > at > org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow(StorageProxy.java:453) > at > org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30) > at > java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) > at java.lang.Thread.run(Thread.java:662) > and several more of these errors > > Thanks for the help. Let me know if you need more info.
-- Jonathan Ellis Project Chair, Apache Cassandra co-founder of DataStax, the source for professional Cassandra support http://www.datastax.com
