java.lang.OutOfMemoryError: Java heap space
cutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:636) Caused by: java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: Java heap space at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:252) at java.util.concurrent.FutureTask.get(FutureTask.java:111) at org.apache.cassandra.service.StorageProxy.weakRead(StorageProxy.java:276) ... 11 more Caused by: java.lang.OutOfMemoryError: Java heap space 2010-11-24 zangds
about key sorting and token partitioning
Hi, I am using cassandra to store a message steam, and want to use timestamps (like mmddhhMIss or something alike) as the keys. So if I use RandomPartitioner, I will loose the order when using get_range_slices(). If I use OrderPreservingPartitioner, how should I configure cassandra to make load balance between the nodes? Thanks! 2010-11-10 zangds
Re: RE: how does get_range_slices work?
No,It's not the columns, but the rows. These are the keys of the rows. -- zangds 2010-11-05 - 发件人：Stu Hood 发送日期：2010-11-05 17:07:43 收件人：user 抄送： 主题：RE: how does get_range_slices work? What column comparator/type are you using? Remember that if you are using BytesType/UTF8Type, columns will be sorted lexicographically. -Original Message- From: "zangds" Sent: Friday, November 5, 2010 8:53am To: "user" Subject: how does get_range_slices work? Hi, I have a question about the get_range_slices() function about the key sorting. I inserted some colums with keys of '1', '2' ,'7' and '10'. When I use get_range_slices to get colums betwen '1' and '10' , I got none. But When I get colums betwen '10' and '1', I got '10', '2' and '1'. Can anybody tell me why? Thanks! 2010-11-05 zangds
how does get_range_slices work?
Hi, I have a question about the get_range_slices() function about the key sorting. I inserted some colums with keys of '1', '2' ,'7' and '10'. When I use get_range_slices to get colums betwen '1' and '10' , I got none. But When I get colums betwen '10' and '1', I got '10', '2' and '1'. Can anybody tell me why? Thanks! 2010-11-05 zangds
default_validation_class and column_metadata
Hi, Is it possible to use default_validation_class and column_metadata in cassandra-cli? I'm using 0.7.0-beta2. Thanks! 2010-11-05 zangds
what is cassandra-rack.properties used for?
and how to config it? 2010-11-03 zangds
Re: Re: how to create Keyspaces and ColumnFamilies in 0.7.0 beta2?
Thank you. how to "import yaml declaration once throw JMX“？ 2010-10-30 zangds 发件人： ruslan usifov 发送时间： 2010-10-30 22:32:31 收件人： user 抄送： 主题： Re: how to create Keyspaces and ColumnFamilies in 0.7.0 beta2? I'm sorry but i mistaken, the example mut lokks like this: create keyspace test_1 with replication_factor=1; use test_1; create column family value with column_type='Standard' and comparator='AsciiType' and rows_cached=0.5 and key_cache_size=400; http://wiki.apache.org/cassandra/LiveSchemaUpdates 2010/10/31 ruslan usifov It should be creatted dinamicly, But you can import yaml declaration once throw JMX To create dynamicly you can use cassandra-cli Here some example of use it create keyspace test_1; use test_1; create column family value with replication_factor=1 and column_type='Standard' and comparator='AsciiType' and rows_cached=0.5 and key_cache_size=400; 2010/10/30 zangds Should it be defined in cassandra.yaml? Or, create it on dynamic? 2010-10-30 zangds
how to create Keyspaces and ColumnFamilies in 0.7.0 beta2?
Should it be defined in cassandra.yaml? Or, create it on dynamic? 2010-10-30 zangds
no default storage-conf.xml in apache-cassandra-0.7.0-beta2?
rt 2010-10-28 zangds
