RE: Unsubscribe
What do you unsubscribe? From: Rajeev Yadav [mailto:rajeya...@gmail.com] Sent: April 9, 2015 1:02 PM To: user@hadoop.apache.org Subject: Unsubscribe Unsubscribe -- Warm Regards, Rajeev Yadav
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Unsubscribe -- *Warm Regards,* Rajeev Yadav
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Not able to run more than one map task
Hi All, We recently started working on Hadoop. We have setup the hadoop in pseduo distribution mode along with oozie. Every developer has set it up on his laptop. The problem is that we are not able to run more than one map task concurrently on our laptops. Resource manager is not allowing more than one task on our machine. My task gets completed if I submit it without Oozie. Oozie requires one map task for its own functioning. Actual task that oozie submit does not start. Here is my configuration -- Hadoop setup in Pseudo distribution mode -- Hadoop Version - 2.6-- Oozie Version - 4.0.1 Regards,Amit
Re: Unable to load file from local to HDFS cluster
Hi Yanghaogn, Sure, We couldn't able to load the file from local to HDFS. Its getting exception DFSOutputStream connection refused,which means packets are not receiving properly from namenode to datanodes .However,if we start clusters our datanodes are not starting properly and getting connection closed exception. Our Hadoop WebUI also opening very slow ,ssh connection also very slow.Then finally we have changed our network ports and checked the performance of the cluster it works good. Issue was fixed in Namenode server network port. Regards, Sandeep.v On Thu, Apr 9, 2015 at 12:30 PM, 杨浩 wrote: > Root cause: Network related issue? > can you tell us more detailedly？ Thank you > > 2015-04-09 13:51 GMT+08:00 sandeep vura : > >> Our issue has been resolved. >> >> Root cause: Network related issue. >> >> Thanks for each and everyone spent sometime and replied to my questions. >> >> Regards, >> Sandeep.v >> >> On Thu, Apr 9, 2015 at 10:45 AM, sandeep vura >> wrote: >> >>> Can anyone give solution for my issue? >>> >>> On Thu, Apr 9, 2015 at 12:48 AM, sandeep vura >>> wrote: >>> Exactly but every time it picks randomly. Our datanodes are 192.168.2.81,192.168.2.82,192.168.2.83,192.168.2.84,192.168.2.85 Namenode : 192.168.2.80 If i restarts the cluster next time it will show 192.168.2.81:50010 connection closed On Thu, Apr 9, 2015 at 12:28 AM, Liaw, Huat (MTO) >>> > wrote: > You can not start 192.168.2.84:50010…. closed by ((192.168.2.x > -datanode)) > > > > *From:* sandeep vura [mailto:sandeepv...@gmail.com] > *Sent:* April 8, 2015 2:39 PM > > *To:* user@hadoop.apache.org > *Subject:* Re: Unable to load file from local to HDFS cluster > > > > We are using this setup from a very long time.We are able to run all > the jobs successfully but suddenly went wrong with namenode. > > > > On Thu, Apr 9, 2015 at 12:06 AM, sandeep vura > wrote: > > I have also noticed another issue when starting hadoop cluster > start-all.sh command > > > > namenode and datanode daemons are starting.But sometimes one of the > datanode would drop the connection and it shows the message connection > closed by ((192.168.2.x -datanode)) everytime when it restart the hadoop > cluster datanode will keeps changing . > > > > for example 1st time when i starts hadoop cluster - 192.168.2.1 - > connection closed > > 2nd time when i starts hadoop cluster - 192.168.2.2-connection closed > .This point again 192.168.2.1 will starts successfuly without any errors. > > > > I couldn't able to figure out the issue exactly.Is issue relates to > network or Hadoop configuration. > > > > > > > > On Wed, Apr 8, 2015 at 11:54 PM, Liaw, Huat (MTO) < > huat.l...@ontario.ca> wrote: > > hadoop fs -put Copy from remote location to > HDFS > > > > *From:* sandeep vura [mailto:sandeepv...@gmail.com] > *Sent:* April 8, 2015 2:24 PM > *To:* user@hadoop.apache.org > *Subject:* Re: Unable to load file from local to HDFS cluster > > > > Sorry Liaw,I tried same command but its didn't resolve. > > > > Regards, > > Sandeep.V > > > > On Wed, Apr 8, 2015 at 11:37 PM, Liaw, Huat (MTO) < > huat.l...@ontario.ca> wrote: > > Should be hadoop dfs -put > > > > *From:* sandeep vura [mailto:sandeepv...@gmail.com] > *Sent:* April 8, 2015 1:53 PM > *To:* user@hadoop.apache.org > *Subject:* Unable to load file from local to HDFS cluster > > > > Hi, > > > > When loading a file from local to HDFS cluster using the below command > > > > hadoop fs -put sales.txt /sales_dept. > > > > Getting the following exception.Please let me know how to resolve this > issue asap.Please find the attached is the logs that is displaying on > namenode. > > > > Regards, > > Sandeep.v > > > > > > > >>> >> >
RE: cassandra + tableau
Tableau provides generic ODBC driver connection. There is one available in the latest version of Tableau (8.2?) for Hive. You can try ODBC driver connection or reach out to Progress software https://www.progress.com/ if they have such driver. They adapted/customised one for us specifically for Oracle TimesTen. Remember Tableau is 2.3 compliant HTH Mich Talebzadeh http://talebzadehmich.wordpress.com Author of the books "A Practitioner’s Guide to Upgrading to Sybase ASE 15", ISBN 978-0-9563693-0-7. co-author "Sybase Transact SQL Guidelines Best Practices", ISBN 978-0-9759693-0-4 Publications due shortly: Creating in-memory Data Grid for Trading Systems with Oracle TimesTen and Coherence Cache Oracle and Sybase, Concepts and Contrasts, ISBN: 978-0-9563693-1-4, volume one out shortly NOTE: The information in this email is proprietary and confidential. This message is for the designated recipient only, if you are not the intended recipient, you should destroy it immediately. Any information in this message shall not be understood as given or endorsed by Peridale Ltd, its subsidiaries or their employees, unless expressly so stated. It is the responsibility of the recipient to ensure that this email is virus free, therefore neither Peridale Ltd, its subsidiaries nor their employees accept any responsibility. From: siva kumar [mailto:siva165...@gmail.com] Sent: 09 April 2015 11:13 To: user@hadoop.apache.org Subject: cassandra + tableau Hi Folks, Can anyone suggest me the open source connector to connect tableau to cassandra database. ? Thanks, sivakumar.c
RE: cassandra + tableau
Look at facebook’s Presto. Best regards, Nair From: siva kumar [mailto:siva165...@gmail.com] Sent: Thursday, April 9, 2015 6:13 AM To: user@hadoop.apache.org Subject: cassandra + tableau Hi Folks, Can anyone suggest me the open source connector to connect tableau to cassandra database. ? Thanks, sivakumar.c
cassandra + tableau
Hi Folks, Can anyone suggest me the open source connector to connect tableau to cassandra database. ? Thanks, sivakumar.c
Re: Unable to load file from local to HDFS cluster
Root cause: Network related issue? can you tell us more detailedly？ Thank you 2015-04-09 13:51 GMT+08:00 sandeep vura : > Our issue has been resolved. > > Root cause: Network related issue. > > Thanks for each and everyone spent sometime and replied to my questions. > > Regards, > Sandeep.v > > On Thu, Apr 9, 2015 at 10:45 AM, sandeep vura > wrote: > >> Can anyone give solution for my issue? >> >> On Thu, Apr 9, 2015 at 12:48 AM, sandeep vura >> wrote: >> >>> Exactly but every time it picks randomly. Our datanodes are >>> 192.168.2.81,192.168.2.82,192.168.2.83,192.168.2.84,192.168.2.85 >>> >>> Namenode : 192.168.2.80 >>> >>> If i restarts the cluster next time it will show 192.168.2.81:50010 >>> connection closed >>> >>> On Thu, Apr 9, 2015 at 12:28 AM, Liaw, Huat (MTO) >>> wrote: >>> You can not start 192.168.2.84:50010…. closed by ((192.168.2.x -datanode)) *From:* sandeep vura [mailto:sandeepv...@gmail.com] *Sent:* April 8, 2015 2:39 PM *To:* user@hadoop.apache.org *Subject:* Re: Unable to load file from local to HDFS cluster We are using this setup from a very long time.We are able to run all the jobs successfully but suddenly went wrong with namenode. On Thu, Apr 9, 2015 at 12:06 AM, sandeep vura wrote: I have also noticed another issue when starting hadoop cluster start-all.sh command namenode and datanode daemons are starting.But sometimes one of the datanode would drop the connection and it shows the message connection closed by ((192.168.2.x -datanode)) everytime when it restart the hadoop cluster datanode will keeps changing . for example 1st time when i starts hadoop cluster - 192.168.2.1 - connection closed 2nd time when i starts hadoop cluster - 192.168.2.2-connection closed .This point again 192.168.2.1 will starts successfuly without any errors. I couldn't able to figure out the issue exactly.Is issue relates to network or Hadoop configuration. On Wed, Apr 8, 2015 at 11:54 PM, Liaw, Huat (MTO) wrote: hadoop fs -put Copy from remote location to HDFS *From:* sandeep vura [mailto:sandeepv...@gmail.com] *Sent:* April 8, 2015 2:24 PM *To:* user@hadoop.apache.org *Subject:* Re: Unable to load file from local to HDFS cluster Sorry Liaw,I tried same command but its didn't resolve. Regards, Sandeep.V On Wed, Apr 8, 2015 at 11:37 PM, Liaw, Huat (MTO) wrote: Should be hadoop dfs -put *From:* sandeep vura [mailto:sandeepv...@gmail.com] *Sent:* April 8, 2015 1:53 PM *To:* user@hadoop.apache.org *Subject:* Unable to load file from local to HDFS cluster Hi, When loading a file from local to HDFS cluster using the below command hadoop fs -put sales.txt /sales_dept. Getting the following exception.Please let me know how to resolve this issue asap.Please find the attached is the logs that is displaying on namenode. Regards, Sandeep.v >>> >>> >> >
