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From wd ...@wdicc.com>
Subject Re: Hadoop streaming job issue
Date Tue, 10 Nov 2009 06:53:57 GMT
You mean the ^A ?
I tried \u0001 and \x01, the streaming job recognise it as a string, not
^A..

:(

2009/11/10 Amogh Vasekar <amogh@yahoo-inc.com>

>  Hi,
> I’m pretty sure you need to specify unicode equivalent, or atleast that is
> what I used in my java map-red program.
>
> Amogh
>
>
>
> On 11/10/09 9:24 AM, "wd" <wd@wdicc.com> wrote:
>
> hi,
>
> I'm try to write a hadoop streaming job by perl. But i'm complately
> confused by the key/value separator.
>
> I found lots of separators I can set ...
>
> # -jobconf stream.map.output.field.separator=A \
> # -jobconf stream.reducer.output.field.separator=B \
> # -jobconf mapred.textoutputformat.separator=C \
> # -jobconf key.value.separator.in.input.line=D \
> # -jobconf stream.map.output.field.separator=A \
> # -jobconf stream.reduce.input.field.separator=AA \
> # -jobconf stream.reduce.output.field.separator=B \
> # -jobconf map.output.key.field.separator=C \
>
> But what does these separators mean?
>
> I try to use ^A in my job, and find this bug <
> http://issues.apache.org/jira/browse/HADOOP-3341>  , it seems hadoop have
> fix it in 0.19.0, but I still get follow error when I set to ^A.
>
>
> [Fatal Error] :49:68: Character reference "&#1" is an invalid XML
> character.
> 09/11/10 11:10:16 FATAL conf.Configuration: error parsing conf file:
> org.xml.sax.SAXParseException: Character reference "&#1" is an invalid XML
> character.
> Exception in thread "main" java.lang.RuntimeException:
> org.xml.sax.SAXParseException: Character reference "&#1" is an invalid XML
> character.
>     at
> org.apache.hadoop.conf.Configuration.loadResource(Configuration.java:1167)
>     at
> org.apache.hadoop.conf.Configuration.loadResources(Configuration.java:1039)
>     at
> org.apache.hadoop.conf.Configuration.getProps(Configuration.java:979)
>     at org.apache.hadoop.conf.Configuration.get(Configuration.java:381)
>     at
> org.apache.hadoop.mapred.JobConf.checkAndWarnDeprecation(JobConf.java:1630)
>     at org.apache.hadoop.mapred.JobConf.<init>(JobConf.java:214)
>     at
> org.apache.hadoop.mapred.LocalJobRunner$Job.<init>(LocalJobRunner.java:93)
>     at
> org.apache.hadoop.mapred.LocalJobRunner.submitJob(LocalJobRunner.java:372)
>     at
> org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:800)
>     at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:730)
>     at
> org.apache.hadoop.streaming.StreamJob.submitAndMonitorJob(StreamJob.java:873)
>     at org.apache.hadoop.streaming.StreamJob.run(StreamJob.java:118)
>     at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
>     at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
>     at
> org.apache.hadoop.streaming.HadoopStreaming.main(HadoopStreaming.java:32)
>     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>     at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>     at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>     at java.lang.reflect.Method.invoke(Method.java:597)
>     at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
> Caused by: org.xml.sax.SAXParseException: Character reference "&#1" is an
> invalid XML character.
>     at
> com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:239)
>     at
> com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:283)
>     at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:124)
>     at
> org.apache.hadoop.conf.Configuration.loadResource(Configuration.java:1091)
>     ... 19 more
>
> So, I can't use ^A as the separator ?
>
>

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