Hi Hyunsik Choi, Thank you for your reply and jira issues. I loot forward to meet 0.8-incubating.
Regards, Jae. 2013/11/13 Hyunsik Choi <[email protected]> > Hi Jae Lee, > > Thank you for your interest in Tajo. From your questions, I've just > added two jira issues, and scheduled them to 0.8-incubating. They will > be resolved soon. > > TAJO-304: drop table command should not remove data files in default > (https://issues.apache.org/jira/browse/TAJO-304) > TAJO-305: Implement killQuery feature > (https://issues.apache.org/jira/browse/TAJO-305) > > - hyunsik > > On Tue, Nov 12, 2013 at 10:58 AM, Jinho Kim <[email protected]> wrote: > > Hi Jae, > > > > Could you try to do the following? I'm suspecting that some column values > > may contain Hive's default null character '\\N'. > > > > CREATE EXTERNAL TABLE tablename( A int, B text, C text) > > > > using csv with('csvfile.delimiter'='\001','csvfile.null'='\\N') > > > > > > Besides, in Hive, some value that cannot be parsed are dealt as NULL. > But, > > in the current Tajo, they causes errors. > > > > > > Thanks > > -Jinho > > > > > > 2013/11/12 Jae Lee <[email protected]> > > > >> Hi Jihoon, > >> > >> Thank you for your answer. > >> About Q1 has more question. > >> I already waiting for query result long time. I think that is not > normaly. > >> COUNT(*) query got result only 300sec, but DISTINCT, GROUPBY and SUM > query > >> is excuting whole day. > >> I found another error message. Please see below message. > >> Error message is about integer type column name of "Year". > >> The query was "select distinct year from departuredelay;" > >> I was execute same query on Hive. It had no error. > >> But Year column has some null or blank data. > >> Table was create EXTERNAL table with several CSV files on HDFS. > >> > --------------------------------------------------------------------------- > >> > >> 2013-11-11 18:34:01,436 ERROR worker.Task (Task.java:run(363)) - > >> java.lang.NumberFormatException: For input string: "Year" > >> at > >> > >> > java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) > >> at java.lang.Integer.parseInt(Integer.java:492) > >> at java.lang.Integer.valueOf(Integer.java:582) > >> at org.apache.tajo.datum.DatumFactory.createInt4(DatumFactory.java:140) > >> at > org.apache.tajo.storage.LazyTuple.createByTextBytes(LazyTuple.java:313) > >> at org.apache.tajo.storage.LazyTuple.get(LazyTuple.java:126) > >> at org.apache.tajo.engine.eval.FieldEval.eval(FieldEval.java:58) > >> at org.apache.tajo.engine.planner.Projector.eval(Projector.java:87) > >> at > >> > >> > org.apache.tajo.engine.planner.physical.SeqScanExec.next(SeqScanExec.java:111) > >> at > >> > >> > org.apache.tajo.engine.planner.physical.HashAggregateExec.compute(HashAggregateExec.java:57) > >> at > >> > >> > org.apache.tajo.engine.planner.physical.HashAggregateExec.next(HashAggregateExec.java:83) > >> at > >> > >> > org.apache.tajo.engine.planner.physical.PartitionedStoreExec.next(PartitionedStoreExec.java:121) > >> at org.apache.tajo.worker.Task.run(Task.java:355) > >> at org.apache.tajo.worker.TaskRunner$1.run(TaskRunner.java:376) > >> at java.lang.Thread.run(Thread.java:744) > >> > >> > >> > ----------------------------------------------------------------------------- > >> > >> > >> > >> Also I attach file tajo-site.xml. > >> Please check my config is correct. > >> > >> hostname | hadoop | tajo | DBMS > >> namenode | namenode | master | Maria (Metastore) > >> snamenode | snamenode+datanode1 | worker > >> datanode02 | datanode2 | worker > >> datanode03 | datanode3 | worker > >> > >> > >> > ----------------------------------------------------------------------------- > >> <configuration> > >> <property> > >> <name>tajo.rootdir</name> > >> <value>hdfs://namenode:9000/tajo</value> > >> </property> > >> <property> > >> <name>tajo.master.umbilical-rpc.address</name> > >> <value>namenode:26001</value> > >> </property> > >> <property> > >> <name>tajo.master.client-rpc.address</name> > >> <value>namenode:26002</value> > >> </property> > >> <property> > >> <name>tajo.master.info-http.address</name> > >> <value>namenode:26080</value> > >> </property> > >> <property> > >> <name>tajo.catalog.client-rpc.address</name> > >> <value>namenode:26005</value> > >> </property> > >> </configuration> > >> > >> > >> Regards, > >> Jae > >> > >> > >> 2013/11/11 Jihoon Son <[email protected]> > >> > >> > Hi Jae Lee, > >> > thanks for your interesting to Tajo. > >> > > >> > Here are my answers. > >> > > >> > 1. The timeout message looks like an error, but it does not mean that > the > >> > query is failed. (We should change the message.) > >> > Would you wait for some time after executing a query, please? > >> > If any other errors occur, please report it to us. > >> > > >> > 2. Tajo's SQL commands are designed to follow those of traditional > >> > relational databases. > >> > In those systems, the 'DROP table' command deletes data from disks. > >> > However, we are also considering the Hive-style 'DROP table', because > >> > tables are generally very large. > >> > > >> > 3. Tajo currently does not provide any commands to kill executing > >> queries. > >> > Instead, you should kill the master and every worker using the unix > >> 'kill' > >> > command. > >> > > >> > If you have any other questions, > >> > please feel free to ask us. > >> > > >> > Thanks, > >> > Jihoon > >> > > >> > > >> > 2013/11/11 Jae Lee <[email protected]> > >> > > >> > > Hello, > >> > > > >> > > :: I have error message and hang query with below. > >> > > It's from clustered tajo worker. > >> > > Centos 6.2 + hadoop 2.0.5 + tajo 0.2.0 > >> > > Just count(*) query is working but use distinct or group by query > had > >> > hang > >> > > and this error messages > >> > > > >> > > :: have more question > >> > > Tajo delete files on hdfs when i drop EXTERNAL table. is it normal? > >> > > Because Hive is not delete files when drop external table. > >> > > > >> > > :: How to can i kill tajo jobs (query)? > >> > > > >> > > > --------------------------------------------------------------------- > >> > > 2013-11-11 18:44:22,751 WARN worker.TaskRunner > >> > (TaskRunner.java:run(339)) > >> > > - Timeout > >> > > > >> > > > >> > > >> > GetTask:eb_1384155011466_0005_000001,container_1384155011466_0005_01_000013, > >> > > but retry > >> > > java.util.concurrent.TimeoutException > >> > > at org.apache.tajo.rpc.CallFuture.get(CallFuture.java:81) > >> > > at org.apache.tajo.worker.TaskRunner$1.run(TaskRunner.java:328) > >> > > at java.lang.Thread.run(Thread.java:744) > >> > > > >> > > > >> > > Regards, > >> > > Jae > >> > > > >> > > >> > > >> > > >> > -- > >> > Jihoon Son > >> > > >> > Database & Information Systems Group, > >> > Prof. Yon Dohn Chung Lab. > >> > Dept. of Computer Science & Engineering, > >> > Korea University > >> > 1, 5-ga, Anam-dong, Seongbuk-gu, > >> > Seoul, 136-713, Republic of Korea > >> > > >> > Tel : +82-2-3290-3580 > >> > E-mail : [email protected] > >> > > >> >
