Rahul, Thank for your feedback. I will give it a shot as you suggested and will let you know.
Regards. Nurur From: Rahul Iyer [mailto:[email protected]] Sent: Monday, July 18, 2016 7:45 PM To: [email protected] Cc: Frank McQuillan <[email protected]> Subject: Re: MADlib's Random Forest Classification and Regression Example Hello Nurur, I tried reproducing your error on an existing HAWQ 1.3.0.0 installation with a new database and was unable to do so (see attached log for successful query results). It's possible something is corrupted in the database you're using. Was the madlib schema previously dropped in your database? Would it be possible for you to test this again on a fresh database? Best, Rahul On Wed, Jul 13, 2016 at 8:07 AM, Nurur Rahman <[email protected]<mailto:[email protected]>> wrote: Hello, I am going through Random Forest example given in MADlib's User Documentation: http://madlib.incubator.apache.org/docs/latest/group__grp__random__forest.html#examples In both cases when I run “SELECT madlib.forest_train( … … )” exactly as it is shown in steps 1 and 2 in the example page, I get the following error: ERROR: plpy.SPIError: Function "madlib._dt_apply(madlib.bytea8,madlib.bytea8,madlib.bytea8,smallint,smallint,smallint,boolean,integer)": Invalid type conversion. Simple type supplied but backend expects composite type. (plpython.c:4648) CONTEXT: Traceback (most recent call last): PL/Python function "forest_train", line 39, in <module> sample_ratio PL/Python function "forest_train", line 553, in forest_train PL/Python function "forest_train", line 2192, in _tree_train_using_bins PL/Python function "forest_train", line 1162, in _one_step PL/Python function "forest_train" Relevant Info: "PostgreSQL 8.2.15 (Greenplum Database 4.2.0 build 1) (HAWQ 1.3.0.0 build 12954) "MADlib version: 1.9, git revision: rc/v1.9-rc1 Can anyone please explain what the reasons behind this error message? Your help will be appreciated. Thanks. Nurur ________________________________ ----------------------------------------- This message, and any attachments to it, may contain information that is privileged, confidential, and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, you are notified that any use, dissemination, distribution, copying, or communication of this message is strictly prohibited. If you have received this message in error, please notify the sender immediately by return e-mail and delete the message and any attachments. Thank you. -- --------------------------------------------------------- Rahul Iyer Principal software engineer | Predictive Analytics Pivotal A new platform for a new era ----------------------------------------- This message, and any attachments to it, may contain information that is privileged, confidential, and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, you are notified that any use, dissemination, distribution, copying, or communication of this message is strictly prohibited. If you have received this message in error, please notify the sender immediately by return e-mail and delete the message and any attachments. Thank you.
