Trouble with REGEX in PIG
Hi,
I'm trying to use regular expressions in PIG, but it's failing. Based on the
documentation http://pig.apache.org/docs/r0.12.0/func.html#regex-extract I am
trying this:
[watrous@c0003913 ~]$ pig -x local
which: no hadoop in
(/opt/krb5/sbin/64:/usr/lib64/qt-3.3/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/usr/X11R6/bin:/sbin:/usr/sbin:/usr/bin:/opt/pb/bin:/opt/perf/bin:/bin:/usr/local/bin:/home/watrous/bin:/home/watrous/pig-0.12.0/bin)
2013-12-04 17:15:15,398 [main] INFO org.apache.pig.Main - Apache Pig version
0.12.0 (r1529718) compiled Oct 07 2013, 12:20:14
2013-12-04 17:15:15,398 [main] INFO org.apache.pig.Main - Logging error
messages to: /home/watrous/pig_1386177315394.log
2013-12-04 17:15:15,425 [main] INFO org.apache.pig.impl.util.Utils - Default
bootup file /home/watrous/.pigbootup not found
2013-12-04 17:15:15,599 [main] INFO
org.apache.pig.backend.hadoop.executionengine.HExecutionEngine - Connecting to
hadoop file system at: file:///
grunt REGEX_EXTRACT('192.168.1.5:8020', '(.*):(.*)', 1);
2013-12-04 17:16:59,753 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR
1200: line 1 Cannot expand macro 'REGEX_EXTRACT'. Reason: Macro must be
defined before expansion.
Details at logfile: /home/watrous/pig_1386177315394.log
Here's the relevant bit from the log file:
Pig Stack Trace
---
ERROR 1200: line 1 Cannot expand macro 'REGEX_EXTRACT'. Reason: Macro must be
defined before expansion.
Failed to parse: line 1 Cannot expand macro 'REGEX_EXTRACT'. Reason: Macro
must be defined before expansion.
at org.apache.pig.parser.PigMacro.macroInline(PigMacro.java:455)
at
org.apache.pig.parser.QueryParserDriver.inlineMacro(QueryParserDriver.java:298)
at
org.apache.pig.parser.QueryParserDriver.expandMacro(QueryParserDriver.java:287)
at
org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:180)
at org.apache.pig.PigServer$Graph.validateQuery(PigServer.java:1648)
at org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1621)
at org.apache.pig.PigServer.registerQuery(PigServer.java:575)
at
org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:1093)
at
org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:501)
at
org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:198)
at
org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:173)
at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:69)
at org.apache.pig.Main.run(Main.java:541)
at org.apache.pig.Main.main(Main.java:156)
I attempted to define the macro (following this tutorial
http://aws.amazon.com/articles/2729). However, piggybank.jar doesn't define
org.apache.pig.piggybank.evaluation.string.EXTRACT, so I located the most
likely file in the current version of the jar.
grunt register /home/watrous/pig-0.12.0/contrib/piggybank/java/piggybank.jar
grunt DEFINE REGEX_EXTRACT
org.apache.pig.piggybank.evaluation.string.RegexExtract;
grunt REGEX_EXTRACT('192.168.1.5:8020', '(.*):(.*)', 1);
2013-12-04 17:23:20,383 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR
1200: line 3 Cannot expand macro 'REGEX_EXTRACT'. Reason: Macro must be
defined before expansion.
Details at logfile: /home/watrous/pig_1386177315394.log
I get the same stack trace with the only change being a reference to line 3
instead of line 1.
Any idea how I can get this working?
Daniel
Re: Trouble with REGEX in PIG
R u planning to use
org.apache.pig.builtin.REGEX_EXTRACT
?
On 12/4/13 9:28 AM, Watrous, Daniel daniel.t.watr...@hp.com wrote:
Hi,
I'm trying to use regular expressions in PIG, but it's failing. Based on
the documentation
http://pig.apache.org/docs/r0.12.0/func.html#regex-extract I am trying
this:
[watrous@c0003913 ~]$ pig -x local
which: no hadoop in
(/opt/krb5/sbin/64:/usr/lib64/qt-3.3/bin:/usr/local/bin:/bin:/usr/bin:/usr
/local/sbin:/usr/sbin:/sbin:/usr/X11R6/bin:/sbin:/usr/sbin:/usr/bin:/opt/p
b/bin:/opt/perf/bin:/bin:/usr/local/bin:/home/watrous/bin:/home/watrous/pi
g-0.12.0/bin)
2013-12-04 17:15:15,398 [main] INFO org.apache.pig.Main - Apache Pig
version 0.12.0 (r1529718) compiled Oct 07 2013, 12:20:14
2013-12-04 17:15:15,398 [main] INFO org.apache.pig.Main - Logging error
messages to: /home/watrous/pig_1386177315394.log
2013-12-04 17:15:15,425 [main] INFO org.apache.pig.impl.util.Utils -
Default bootup file /home/watrous/.pigbootup not found
2013-12-04 17:15:15,599 [main] INFO
org.apache.pig.backend.hadoop.executionengine.HExecutionEngine -
Connecting to hadoop file system at: file:///
grunt REGEX_EXTRACT('192.168.1.5:8020', '(.*):(.*)', 1);
2013-12-04 17:16:59,753 [main] ERROR org.apache.pig.tools.grunt.Grunt -
ERROR 1200: line 1 Cannot expand macro 'REGEX_EXTRACT'. Reason: Macro
must be defined before expansion.
Details at logfile: /home/watrous/pig_1386177315394.log
Here's the relevant bit from the log file:
Pig Stack Trace
---
ERROR 1200: line 1 Cannot expand macro 'REGEX_EXTRACT'. Reason: Macro
must be defined before expansion.
Failed to parse: line 1 Cannot expand macro 'REGEX_EXTRACT'. Reason:
Macro must be defined before expansion.
at org.apache.pig.parser.PigMacro.macroInline(PigMacro.java:455)
at
org.apache.pig.parser.QueryParserDriver.inlineMacro(QueryParserDriver.java
:298)
at
org.apache.pig.parser.QueryParserDriver.expandMacro(QueryParserDriver.java
:287)
at
org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:180)
at
org.apache.pig.PigServer$Graph.validateQuery(PigServer.java:1648)
at
org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1621)
at org.apache.pig.PigServer.registerQuery(PigServer.java:575)
at
org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:1093)
at
org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParse
r.java:501)
at
org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:1
98)
at
org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:1
73)
at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:69)
at org.apache.pig.Main.run(Main.java:541)
at org.apache.pig.Main.main(Main.java:156)
I attempted to define the macro (following this tutorial
http://aws.amazon.com/articles/2729). However, piggybank.jar doesn't
define org.apache.pig.piggybank.evaluation.string.EXTRACT, so I located
the most likely file in the current version of the jar.
grunt register
/home/watrous/pig-0.12.0/contrib/piggybank/java/piggybank.jar
grunt DEFINE REGEX_EXTRACT
org.apache.pig.piggybank.evaluation.string.RegexExtract;
grunt REGEX_EXTRACT('192.168.1.5:8020', '(.*):(.*)', 1);
2013-12-04 17:23:20,383 [main] ERROR org.apache.pig.tools.grunt.Grunt -
ERROR 1200: line 3 Cannot expand macro 'REGEX_EXTRACT'. Reason: Macro
must be defined before expansion.
Details at logfile: /home/watrous/pig_1386177315394.log
I get the same stack trace with the only change being a reference to
line 3 instead of line 1.
Any idea how I can get this working?
Daniel
Re: Trouble with REGEX in PIG
It's not valid PigLatin...
The Grunt shell doesn't let you try out functions and UDFs are you're
trying to use them.
A = LOAD 'data' USING PigStorage() as (ip: chararray);
B = FOREACH A GENERATE REGEX_EXTRACT(ip, '(.*):(.*)', 1);
DUMP B;
You always have to load a dataset and work with said dataset(s).
You can create a file called 'data' (per the above script) and put
192.168.1.5:8020 in the file and try the above set of commands in the
grunt shell.
On Wed, Dec 4, 2013 at 10:15 AM, Ankit Bhatnagar ank...@yahoo-inc.comwrote:
R u planning to use
org.apache.pig.builtin.REGEX_EXTRACT
?
On 12/4/13 9:28 AM, Watrous, Daniel daniel.t.watr...@hp.com wrote:
Hi,
I'm trying to use regular expressions in PIG, but it's failing. Based on
the documentation
http://pig.apache.org/docs/r0.12.0/func.html#regex-extract I am trying
this:
[watrous@c0003913 ~]$ pig -x local
which: no hadoop in
(/opt/krb5/sbin/64:/usr/lib64/qt-3.3/bin:/usr/local/bin:/bin:/usr/bin:/usr
/local/sbin:/usr/sbin:/sbin:/usr/X11R6/bin:/sbin:/usr/sbin:/usr/bin:/opt/p
b/bin:/opt/perf/bin:/bin:/usr/local/bin:/home/watrous/bin:/home/watrous/pi
g-0.12.0/bin)
2013-12-04 17:15:15,398 [main] INFO org.apache.pig.Main - Apache Pig
version 0.12.0 (r1529718) compiled Oct 07 2013, 12:20:14
2013-12-04 17:15:15,398 [main] INFO org.apache.pig.Main - Logging error
messages to: /home/watrous/pig_1386177315394.log
2013-12-04 17:15:15,425 [main] INFO org.apache.pig.impl.util.Utils -
Default bootup file /home/watrous/.pigbootup not found
2013-12-04 17:15:15,599 [main] INFO
org.apache.pig.backend.hadoop.executionengine.HExecutionEngine -
Connecting to hadoop file system at: file:///
grunt REGEX_EXTRACT('192.168.1.5:8020', '(.*):(.*)', 1);
2013-12-04 17:16:59,753 [main] ERROR org.apache.pig.tools.grunt.Grunt -
ERROR 1200: line 1 Cannot expand macro 'REGEX_EXTRACT'. Reason: Macro
must be defined before expansion.
Details at logfile: /home/watrous/pig_1386177315394.log
Here's the relevant bit from the log file:
Pig Stack Trace
---
ERROR 1200: line 1 Cannot expand macro 'REGEX_EXTRACT'. Reason: Macro
must be defined before expansion.
Failed to parse: line 1 Cannot expand macro 'REGEX_EXTRACT'. Reason:
Macro must be defined before expansion.
at org.apache.pig.parser.PigMacro.macroInline(PigMacro.java:455)
at
org.apache.pig.parser.QueryParserDriver.inlineMacro(QueryParserDriver.java
:298)
at
org.apache.pig.parser.QueryParserDriver.expandMacro(QueryParserDriver.java
:287)
at
org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:180)
at
org.apache.pig.PigServer$Graph.validateQuery(PigServer.java:1648)
at
org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1621)
at org.apache.pig.PigServer.registerQuery(PigServer.java:575)
at
org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:1093)
at
org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParse
r.java:501)
at
org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:1
98)
at
org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:1
73)
at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:69)
at org.apache.pig.Main.run(Main.java:541)
at org.apache.pig.Main.main(Main.java:156)
I attempted to define the macro (following this tutorial
http://aws.amazon.com/articles/2729). However, piggybank.jar doesn't
define org.apache.pig.piggybank.evaluation.string.EXTRACT, so I located
the most likely file in the current version of the jar.
grunt register
/home/watrous/pig-0.12.0/contrib/piggybank/java/piggybank.jar
grunt DEFINE REGEX_EXTRACT
org.apache.pig.piggybank.evaluation.string.RegexExtract;
grunt REGEX_EXTRACT('192.168.1.5:8020', '(.*):(.*)', 1);
2013-12-04 17:23:20,383 [main] ERROR org.apache.pig.tools.grunt.Grunt -
ERROR 1200: line 3 Cannot expand macro 'REGEX_EXTRACT'. Reason: Macro
must be defined before expansion.
Details at logfile: /home/watrous/pig_1386177315394.log
I get the same stack trace with the only change being a reference to
line 3 instead of line 1.
Any idea how I can get this working?
Daniel
RE: Trouble with REGEX in PIG
That's what I was trying first, but then I tried defining it too.
-Original Message-
From: Ankit Bhatnagar [mailto:ank...@yahoo-inc.com]
Sent: Wednesday, December 04, 2013 11:15 AM
To: user@pig.apache.org; Watrous, Daniel
Subject: Re: Trouble with REGEX in PIG
R u planning to use
org.apache.pig.builtin.REGEX_EXTRACT
?
On 12/4/13 9:28 AM, Watrous, Daniel daniel.t.watr...@hp.com wrote:
Hi,
I'm trying to use regular expressions in PIG, but it's failing. Based
on the documentation
http://pig.apache.org/docs/r0.12.0/func.html#regex-extract I am trying
this:
[watrous@c0003913 ~]$ pig -x local
which: no hadoop in
(/opt/krb5/sbin/64:/usr/lib64/qt-3.3/bin:/usr/local/bin:/bin:/usr/bin:/
usr
/local/sbin:/usr/sbin:/sbin:/usr/X11R6/bin:/sbin:/usr/sbin:/usr/bin:/op
t/p
b/bin:/opt/perf/bin:/bin:/usr/local/bin:/home/watrous/bin:/home/watrous
/pi
g-0.12.0/bin)
2013-12-04 17:15:15,398 [main] INFO org.apache.pig.Main - Apache Pig
version 0.12.0 (r1529718) compiled Oct 07 2013, 12:20:14
2013-12-04 17:15:15,398 [main] INFO org.apache.pig.Main - Logging
error messages to: /home/watrous/pig_1386177315394.log
2013-12-04 17:15:15,425 [main] INFO org.apache.pig.impl.util.Utils -
Default bootup file /home/watrous/.pigbootup not found
2013-12-04 17:15:15,599 [main] INFO
org.apache.pig.backend.hadoop.executionengine.HExecutionEngine -
Connecting to hadoop file system at: file:///
grunt REGEX_EXTRACT('192.168.1.5:8020', '(.*):(.*)', 1);
2013-12-04 17:16:59,753 [main] ERROR org.apache.pig.tools.grunt.Grunt -
ERROR 1200: line 1 Cannot expand macro 'REGEX_EXTRACT'. Reason: Macro
must be defined before expansion.
Details at logfile: /home/watrous/pig_1386177315394.log
Here's the relevant bit from the log file:
Pig Stack Trace
---
ERROR 1200: line 1 Cannot expand macro 'REGEX_EXTRACT'. Reason: Macro
must be defined before expansion.
Failed to parse: line 1 Cannot expand macro 'REGEX_EXTRACT'. Reason:
Macro must be defined before expansion.
at org.apache.pig.parser.PigMacro.macroInline(PigMacro.java:455)
at
org.apache.pig.parser.QueryParserDriver.inlineMacro(QueryParserDriver.j
ava
:298)
at
org.apache.pig.parser.QueryParserDriver.expandMacro(QueryParserDriver.j
ava
:287)
at
org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:180)
at
org.apache.pig.PigServer$Graph.validateQuery(PigServer.java:1648)
at
org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1621)
at org.apache.pig.PigServer.registerQuery(PigServer.java:575)
at
org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:1093)
at
org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptPa
rse
r.java:501)
at
org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.jav
a:1
98)
at
org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.jav
a:1
73)
at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:69)
at org.apache.pig.Main.run(Main.java:541)
at org.apache.pig.Main.main(Main.java:156)
I attempted to define the macro (following this tutorial
http://aws.amazon.com/articles/2729). However, piggybank.jar doesn't
define org.apache.pig.piggybank.evaluation.string.EXTRACT, so I located
the most likely file in the current version of the jar.
grunt register
/home/watrous/pig-0.12.0/contrib/piggybank/java/piggybank.jar
grunt DEFINE REGEX_EXTRACT
org.apache.pig.piggybank.evaluation.string.RegexExtract;
grunt REGEX_EXTRACT('192.168.1.5:8020', '(.*):(.*)', 1);
2013-12-04 17:23:20,383 [main] ERROR org.apache.pig.tools.grunt.Grunt -
ERROR 1200: line 3 Cannot expand macro 'REGEX_EXTRACT'. Reason: Macro
must be defined before expansion.
Details at logfile: /home/watrous/pig_1386177315394.log
I get the same stack trace with the only change being a reference to
line 3 instead of line 1.
Any idea how I can get this working?
Daniel
RE: Trouble with REGEX in PIG
Pradeep,
Does the documentation here need to be updated:
http://pig.apache.org/docs/r0.12.0/func.html#regex-extract
It suggests that the function can run against a string and should return the
expected value.
I did confirm that I can use REGEX_EXTRACT on values loaded from a file.
Thank you,
Daniel
-Original Message-
From: Pradeep Gollakota [mailto:pradeep...@gmail.com]
Sent: Wednesday, December 04, 2013 11:28 AM
To: user@pig.apache.org
Subject: Re: Trouble with REGEX in PIG
It's not valid PigLatin...
The Grunt shell doesn't let you try out functions and UDFs are you're trying to
use them.
A = LOAD 'data' USING PigStorage() as (ip: chararray);
B = FOREACH A GENERATE REGEX_EXTRACT(ip, '(.*):(.*)', 1);
DUMP B;
You always have to load a dataset and work with said dataset(s).
You can create a file called 'data' (per the above script) and put
192.168.1.5:8020 in the file and try the above set of commands in the grunt
shell.
On Wed, Dec 4, 2013 at 10:15 AM, Ankit Bhatnagar ank...@yahoo-inc.comwrote:
R u planning to use
org.apache.pig.builtin.REGEX_EXTRACT
?
On 12/4/13 9:28 AM, Watrous, Daniel daniel.t.watr...@hp.com wrote:
Hi,
I'm trying to use regular expressions in PIG, but it's failing. Based
on the documentation
http://pig.apache.org/docs/r0.12.0/func.html#regex-extract I am
trying
this:
[watrous@c0003913 ~]$ pig -x local
which: no hadoop in
(/opt/krb5/sbin/64:/usr/lib64/qt-3.3/bin:/usr/local/bin:/bin:/usr/bin
:/usr
/local/sbin:/usr/sbin:/sbin:/usr/X11R6/bin:/sbin:/usr/sbin:/usr/bin:/
opt/p
b/bin:/opt/perf/bin:/bin:/usr/local/bin:/home/watrous/bin:/home/watro
us/pi
g-0.12.0/bin)
2013-12-04 17:15:15,398 [main] INFO org.apache.pig.Main - Apache Pig
version 0.12.0 (r1529718) compiled Oct 07 2013, 12:20:14
2013-12-04 17:15:15,398 [main] INFO org.apache.pig.Main - Logging
error messages to: /home/watrous/pig_1386177315394.log
2013-12-04 17:15:15,425 [main] INFO org.apache.pig.impl.util.Utils -
Default bootup file /home/watrous/.pigbootup not found
2013-12-04 17:15:15,599 [main] INFO
org.apache.pig.backend.hadoop.executionengine.HExecutionEngine -
Connecting to hadoop file system at: file:///
grunt REGEX_EXTRACT('192.168.1.5:8020', '(.*):(.*)', 1);
2013-12-04 17:16:59,753 [main] ERROR org.apache.pig.tools.grunt.Grunt
- ERROR 1200: line 1 Cannot expand macro 'REGEX_EXTRACT'. Reason:
Macro must be defined before expansion.
Details at logfile: /home/watrous/pig_1386177315394.log
Here's the relevant bit from the log file:
Pig Stack Trace
---
ERROR 1200: line 1 Cannot expand macro 'REGEX_EXTRACT'. Reason:
Macro must be defined before expansion.
Failed to parse: line 1 Cannot expand macro 'REGEX_EXTRACT'. Reason:
Macro must be defined before expansion.
at org.apache.pig.parser.PigMacro.macroInline(PigMacro.java:455)
at
org.apache.pig.parser.QueryParserDriver.inlineMacro(QueryParserDriver
.java
:298)
at
org.apache.pig.parser.QueryParserDriver.expandMacro(QueryParserDriver
.java
:287)
at
org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:180)
at
org.apache.pig.PigServer$Graph.validateQuery(PigServer.java:1648)
at
org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1621)
at org.apache.pig.PigServer.registerQuery(PigServer.java:575)
at
org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:1093)
at
org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScript
Parse
r.java:501)
at
org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.j
ava:1
98)
at
org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.j
ava:1
73)
at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:69)
at org.apache.pig.Main.run(Main.java:541)
at org.apache.pig.Main.main(Main.java:156)
I attempted to define the macro (following this tutorial
http://aws.amazon.com/articles/2729). However, piggybank.jar doesn't
define org.apache.pig.piggybank.evaluation.string.EXTRACT, so I
located the most likely file in the current version of the jar.
grunt register
/home/watrous/pig-0.12.0/contrib/piggybank/java/piggybank.jar
grunt DEFINE REGEX_EXTRACT
org.apache.pig.piggybank.evaluation.string.RegexExtract;
grunt REGEX_EXTRACT('192.168.1.5:8020', '(.*):(.*)', 1);
2013-12-04 17:23:20,383 [main] ERROR org.apache.pig.tools.grunt.Grunt
- ERROR 1200: line 3 Cannot expand macro 'REGEX_EXTRACT'. Reason:
Macro must be defined before expansion.
Details at logfile: /home/watrous/pig_1386177315394.log
I get the same stack trace with the only change being a reference to
line 3 instead of line 1.
Any idea how I can get this working?
Daniel
CROSS/Self-Join Bug - Please Help :(
I have this bug that is killing me, where I can't self-join/cross a dataset
with itself. Its blocking my work :(
The script is like this:
businesses = LOAD
'yelp_phoenix_academic_dataset/yelp_academic_dataset_business.json' using
com.twitter.elephantbird.pig.load.JsonLoader() as json:map[];
/* {open=true, neighborhoods={}, review_count=14, stars=4.0, name=Drybar,
business_id=LcAamvosJu0bcPgEVF-9sQ, state=AZ, full_address=3172 E Camelback
Rd
Phoenix, AZ85018, categories={(Hair Salons),(Hair Stylists),(Beauty
Spas)}, longitude=-112.0131927, latitude=33.5107772, type=business,
city=Phoenix} */
locations = FOREACH businesses GENERATE $0#'business_id' AS business_id,
$0#'longitude' AS longitude,
$0#'latitude' AS latitude;
STORE locations INTO 'yelp_phoenix_academic_dataset/locations.tsv';
locations_2 = LOAD 'yelp_phoenix_academic_dataset/locations.tsv' AS
(business_id:chararray, longitude:double, latitude:double);
location_comparisons = CROSS locations_2, locations;
distances = FOREACH businesses GENERATE locations.business_id AS
business_id_1,
locations_2.business_id AS
business_id_2,
udfs.haversine(locations.longitude,
locations.latitude,
locations_2.longitude,
locations_2.latitude) AS distance;
STORE distances INTO 'yelp_phoenix_academic_dataset/distances.tsv';
I have also tried converting this to a self-join using JOIN BY '1', and
also locations_2 = locations, and I get the same error:
*org.apache.pig.backend.executionengine.ExecException: ERROR 0: Scalar has
more than one row in the output. 1st :
(rncjoVoEFUJGCUoC1JgnUA,-112.241596,33.581867), 2nd
:(0FNFSzCFP_rGUoJx8W7tJg,-112.105933,33.604054)*
at org.apache.pig.impl.builtin.ReadScalars.exec(ReadScalars.java:111)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNext(POUserFunc.java:336)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNext(POUserFunc.java:438)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.getNext(PhysicalOperator.java:347)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.processPlan(POForEach.java:378)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.getNext(POForEach.java:298)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.runPipeline(PigGenericMapBase.java:283)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:278)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:64)
at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:764)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:212)
This makes no sense! What am I to do? I can't self-join :(
--
Russell Jurney twitter.com/rjurney russell.jur...@gmail.com datasyndrome.com
Re: CROSS/Self-Join Bug - Please Help :(
There was a bug in the script on the 2nd to last line. Fixed it, still have
same issue.
I found a workaround: if I store the CROSSED relation immediately after the
CROSS, then load it... it works. Something about resetting the plan. This
is a bug. I'll file a JIRA.
On Wed, Dec 4, 2013 at 1:21 PM, Russell Jurney russell.jur...@gmail.comwrote:
I have this bug that is killing me, where I can't self-join/cross a
dataset with itself. Its blocking my work :(
The script is like this:
businesses = LOAD
'yelp_phoenix_academic_dataset/yelp_academic_dataset_business.json' using
com.twitter.elephantbird.pig.load.JsonLoader() as json:map[];
/* {open=true, neighborhoods={}, review_count=14, stars=4.0, name=Drybar,
business_id=LcAamvosJu0bcPgEVF-9sQ, state=AZ, full_address=3172 E Camelback
Rd
Phoenix, AZ85018, categories={(Hair Salons),(Hair Stylists),(Beauty
Spas)}, longitude=-112.0131927, latitude=33.5107772, type=business,
city=Phoenix} */
locations = FOREACH businesses GENERATE $0#'business_id' AS business_id,
$0#'longitude' AS longitude,
$0#'latitude' AS latitude;
STORE locations INTO 'yelp_phoenix_academic_dataset/locations.tsv';
locations_2 = LOAD 'yelp_phoenix_academic_dataset/locations.tsv' AS
(business_id:chararray, longitude:double, latitude:double);
location_comparisons = CROSS locations_2, locations;
distances = FOREACH businesses GENERATE locations.business_id AS
business_id_1,
locations_2.business_id AS
business_id_2,
udfs.haversine(locations.longitude,
locations.latitude,
locations_2.longitude,
locations_2.latitude) AS distance;
STORE distances INTO 'yelp_phoenix_academic_dataset/distances.tsv';
I have also tried converting this to a self-join using JOIN BY '1', and
also locations_2 = locations, and I get the same error:
*org.apache.pig.backend.executionengine.ExecException: ERROR 0: Scalar has
more than one row in the output. 1st :
(rncjoVoEFUJGCUoC1JgnUA,-112.241596,33.581867), 2nd
:(0FNFSzCFP_rGUoJx8W7tJg,-112.105933,33.604054)*
at org.apache.pig.impl.builtin.ReadScalars.exec(ReadScalars.java:111)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNext(POUserFunc.java:336)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNext(POUserFunc.java:438)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.getNext(PhysicalOperator.java:347)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.processPlan(POForEach.java:378)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.getNext(POForEach.java:298)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.runPipeline(PigGenericMapBase.java:283)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:278)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:64)
at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:764)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:212)
This makes no sense! What am I to do? I can't self-join :(
--
Russell Jurney twitter.com/rjurney russell.jur...@gmail.com datasyndrome.
com
--
Russell Jurney twitter.com/rjurney russell.jur...@gmail.com datasyndrome.com
Re: CROSS/Self-Join Bug - Please Help :(
I tried to following script (not exactly the same) and it worked correctly
for me.
businesses = LOAD 'dataset' using PigStorage(',') AS (a, b, c,
business_id: chararray, lat: double, lng: double);
locations = FOREACH businesses GENERATE business_id, lat, lng;
STORE locations INTO 'locations.tsv';
locations2 = LOAD 'locations.tsv' AS (business_id, lat, long);
loc_com = CROSS locations2, locations;
dump loc_com;
I’m wondering your problem has something to do with the way that the
JsonStorage works. Another thing you can try is to load ‘locations.tsv’
twice and do a self-cross on that.
On Wed, Dec 4, 2013 at 1:21 PM, Russell Jurney russell.jur...@gmail.comwrote:
I have this bug that is killing me, where I can't self-join/cross a dataset
with itself. Its blocking my work :(
The script is like this:
businesses = LOAD
'yelp_phoenix_academic_dataset/yelp_academic_dataset_business.json' using
com.twitter.elephantbird.pig.load.JsonLoader() as json:map[];
/* {open=true, neighborhoods={}, review_count=14, stars=4.0, name=Drybar,
business_id=LcAamvosJu0bcPgEVF-9sQ, state=AZ, full_address=3172 E Camelback
Rd
Phoenix, AZ85018, categories={(Hair Salons),(Hair Stylists),(Beauty
Spas)}, longitude=-112.0131927, latitude=33.5107772, type=business,
city=Phoenix} */
locations = FOREACH businesses GENERATE $0#'business_id' AS business_id,
$0#'longitude' AS longitude,
$0#'latitude' AS latitude;
STORE locations INTO 'yelp_phoenix_academic_dataset/locations.tsv';
locations_2 = LOAD 'yelp_phoenix_academic_dataset/locations.tsv' AS
(business_id:chararray, longitude:double, latitude:double);
location_comparisons = CROSS locations_2, locations;
distances = FOREACH businesses GENERATE locations.business_id AS
business_id_1,
locations_2.business_id AS
business_id_2,
udfs.haversine(locations.longitude,
locations.latitude,
locations_2.longitude,
locations_2.latitude) AS distance;
STORE distances INTO 'yelp_phoenix_academic_dataset/distances.tsv';
I have also tried converting this to a self-join using JOIN BY '1', and
also locations_2 = locations, and I get the same error:
*org.apache.pig.backend.executionengine.ExecException: ERROR 0: Scalar has
more than one row in the output. 1st :
(rncjoVoEFUJGCUoC1JgnUA,-112.241596,33.581867), 2nd
:(0FNFSzCFP_rGUoJx8W7tJg,-112.105933,33.604054)*
at org.apache.pig.impl.builtin.ReadScalars.exec(ReadScalars.java:111)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNext(POUserFunc.java:336)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNext(POUserFunc.java:438)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.getNext(PhysicalOperator.java:347)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.processPlan(POForEach.java:378)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.getNext(POForEach.java:298)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.runPipeline(PigGenericMapBase.java:283)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:278)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:64)
at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:764)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:212)
This makes no sense! What am I to do? I can't self-join :(
--
Russell Jurney twitter.com/rjurney russell.jur...@gmail.com
datasyndrome.com
weird classpath problem
Hi everyone,
I am having some weird classpath issues with a UDF that returns a custom tuple.
My custom tuple has an arraylist of custom objects. It looks like:
class MyTuple
private ArrayListMyClass list;
When the UDF is called, everything works fine: the tuples are created and the
UDF returns successfully. But then in the next step when I try to dump the
results of the UDF I see class not found exceptions. That is, MyClass can be
found during UDF execution, but it cannot be found while dumping the UDF
results. I tried setting PIG_CLASSPATH, but didn't work. The only working
solution so far is to add my jar file to hadoop's classpath. I wonder whether
this is a bug (PIG_CLASSPATH should work) or I am not setting something
correctly. Any help will be greatly appreciated.
Thanks,
Nezih
Here is my pig script:
register 'my_jar.jar';
x = load '/etc/passwd' using PigStorage(':') as (username:chararray, f1:
chararray, f2: chararray, f3:chararray, f4:chararray);
parsed = foreach x generate username, MyParser(*);
dump parsed;
Here is the stack trace:
Caused by: java.io.IOException: Could not find class MyClass, while attempting
to de-serialize it
at org.apache.pig.data.BinInterSedes.readWritable(BinInterSedes.java:293)
at org.apache.pig.data.BinInterSedes.readDatum(BinInterSedes.java:422)
at org.apache.pig.data.BinInterSedes.readDatum(BinInterSedes.java:318)
at
org.apache.pig.data.utils.SedesHelper.readGenericTuple(SedesHelper.java:144)
at org.apache.pig.data.BinInterSedes.readDatum(BinInterSedes.java:349)
at org.apache.pig.data.BinInterSedes.readDatum(BinInterSedes.java:318)
at
org.apache.pig.data.utils.SedesHelper.readGenericTuple(SedesHelper.java:144)
at org.apache.pig.data.BinInterSedes.readDatum(BinInterSedes.java:349)
at
org.apache.pig.impl.io.InterRecordReader.nextKeyValue(InterRecordReader.java:113)
at org.apache.pig.impl.io.InterStorage.getNext(InterStorage.java:77)
at
org.apache.pig.impl.io.ReadToEndLoader.getNextHelper(ReadToEndLoader.java:246)
at org.apache.pig.impl.io.ReadToEndLoader.getNext(ReadToEndLoader.java:226)
at
org.apache.pig.backend.hadoop.executionengine.HJob$1.hasNext(HJob.java:111)
... 12 more
Re: CROSS/Self-Join Bug - Please Help :(
If you store immediately after the CROSS, it works. If you do another
FOREACH/GENERATE, etc. it does not.
On Wed, Dec 4, 2013 at 1:41 PM, Pradeep Gollakota pradeep...@gmail.comwrote:
I tried to following script (not exactly the same) and it worked correctly
for me.
businesses = LOAD 'dataset' using PigStorage(',') AS (a, b, c,
business_id: chararray, lat: double, lng: double);
locations = FOREACH businesses GENERATE business_id, lat, lng;
STORE locations INTO 'locations.tsv';
locations2 = LOAD 'locations.tsv' AS (business_id, lat, long);
loc_com = CROSS locations2, locations;
dump loc_com;
I’m wondering your problem has something to do with the way that the
JsonStorage works. Another thing you can try is to load ‘locations.tsv’
twice and do a self-cross on that.
On Wed, Dec 4, 2013 at 1:21 PM, Russell Jurney russell.jur...@gmail.com
wrote:
I have this bug that is killing me, where I can't self-join/cross a
dataset
with itself. Its blocking my work :(
The script is like this:
businesses = LOAD
'yelp_phoenix_academic_dataset/yelp_academic_dataset_business.json' using
com.twitter.elephantbird.pig.load.JsonLoader() as json:map[];
/* {open=true, neighborhoods={}, review_count=14, stars=4.0, name=Drybar,
business_id=LcAamvosJu0bcPgEVF-9sQ, state=AZ, full_address=3172 E
Camelback
Rd
Phoenix, AZ85018, categories={(Hair Salons),(Hair Stylists),(Beauty
Spas)}, longitude=-112.0131927, latitude=33.5107772, type=business,
city=Phoenix} */
locations = FOREACH businesses GENERATE $0#'business_id' AS business_id,
$0#'longitude' AS longitude,
$0#'latitude' AS latitude;
STORE locations INTO 'yelp_phoenix_academic_dataset/locations.tsv';
locations_2 = LOAD 'yelp_phoenix_academic_dataset/locations.tsv' AS
(business_id:chararray, longitude:double, latitude:double);
location_comparisons = CROSS locations_2, locations;
distances = FOREACH businesses GENERATE locations.business_id AS
business_id_1,
locations_2.business_id AS
business_id_2,
udfs.haversine(locations.longitude,
locations.latitude,
locations_2.longitude,
locations_2.latitude) AS distance;
STORE distances INTO 'yelp_phoenix_academic_dataset/distances.tsv';
I have also tried converting this to a self-join using JOIN BY '1', and
also locations_2 = locations, and I get the same error:
*org.apache.pig.backend.executionengine.ExecException: ERROR 0: Scalar
has
more than one row in the output. 1st :
(rncjoVoEFUJGCUoC1JgnUA,-112.241596,33.581867), 2nd
:(0FNFSzCFP_rGUoJx8W7tJg,-112.105933,33.604054)*
at org.apache.pig.impl.builtin.ReadScalars.exec(ReadScalars.java:111)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNext(POUserFunc.java:336)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNext(POUserFunc.java:438)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.getNext(PhysicalOperator.java:347)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.processPlan(POForEach.java:378)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.getNext(POForEach.java:298)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.runPipeline(PigGenericMapBase.java:283)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:278)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:64)
at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:764)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
at
org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:212)
This makes no sense! What am I to do? I can't self-join :(
--
Russell Jurney twitter.com/rjurney russell.jur...@gmail.com
datasyndrome.com
--
Russell Jurney twitter.com/rjurney russell.jur...@gmail.com datasyndrome.com
