That's a bug... Somehow you got it to try to write out a row containing zero columns, which isn't supposed to be allowed.
-Jonathan 2009/9/1 Teodor Sigaev <[email protected]>: > Hi! > During bulk load into Cassandra it produces following error message every > 2-3 minutes: > ERROR [MEMTABLE-FLUSHER-POOL:7] 2009-09-01 19:17:34,628 > DebuggableThreadPoolExecutor.java (line 110) Error in ThreadPoolExecutor > java.util.concurrent.ExecutionException: java.lang.NullPointerException > at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:252) > at java.util.concurrent.FutureTask.get(FutureTask.java:111) > at > org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor.afterExecute(DebuggableThreadPoolExecutor.java:86) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1118) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) > at java.lang.Thread.run(Thread.java:636) > Caused by: java.lang.NullPointerException > at > org.apache.cassandra.db.ColumnIndexer.doIndexing(ColumnIndexer.java:142) > at > org.apache.cassandra.db.ColumnIndexer.serialize(ColumnIndexer.java:62) > at > org.apache.cassandra.db.ColumnFamilySerializer.serializeWithIndexes(ColumnFamilySerializer.java:77) > at org.apache.cassandra.db.Memtable.flush(Memtable.java:210) > at > org.apache.cassandra.db.ColumnFamilyStore$2.run(ColumnFamilyStore.java:1234) > at > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) > at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) > at java.util.concurrent.FutureTask.run(FutureTask.java:166) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) > ... 2 more > > > Is it something to worry about? Snapshot > apache-cassandra-incubating-2009-09-01_12-31-33 > -- > Teodor Sigaev E-mail: [email protected] > WWW: http://www.sigaev.ru/ >
