Re: Hive Compile Error: WrappedRuntimeException

2013-07-02 Thread Xun Tang
To close the loop, I think the problem comes from running 32 bit ubuntu VM on vmware inside windows 7 host. After replacing the 32 bit vm with a 64 bit one, problem is gone... On Sun, Jun 30, 2013 at 9:18 AM, Xun Tang wrote: > Hi, > > ** ** > > I am trying to co

Hive Compile Error: WrappedRuntimeException

2013-06-30 Thread Xun Tang
Hi, ** ** I am trying to compile hive 0.10. Build fails with error ‘WrappedRuntimeException’, related to this jira. https://issues.apache.org/jira/browse/HIVE-4231 ** ** The jira says ‘easy workaround: unset _JAVA_OPTIONS’. However, I didn’t set any java options, nor did

Re: Table present in HDFS but 'show table' Returns Empty

2013-04-24 Thread Xun TANG
session from a different directory next time. > > Please use either mysql as your metastore or set a definite directory in > your config file as your metastore if you continue to use derby as your > meta store. > > Regards, > Ramki. > > > On Mon, Apr 22, 2013 at 9:48 P

Table present in HDFS but 'show table' Returns Empty

2013-04-22 Thread Xun TANG
Hi guys, I've created hive tables via 'hive -f' or hive interactive shell. Data are loaded to tables right after, so the tables are not empty. However, when I log out and log in to hive shell again, 'show tables' return 0 table, while 'hadoop list' command shows the hdfs files are still where they

How to Decide How Many Buckets to Use?

2012-07-10 Thread Xun TANG
Hi, We use Hive to store user click logs and dig out interesting trends, doing a lot of big table joins. We mostly partition by date, and inside each partition data is bucketed by some hashed-id. We are wondering how many buckets to use? If I understand correctly, Hive DB stores each bucket in on