Member since
11-26-2016
9
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2
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1
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My Accepted Solutions
Title | Views | Posted |
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2440 | 11-26-2016 09:34 PM |
02-01-2021
07:16 AM
Thanks for you answer Dennis. As I need the value of the attribute I don't understand how anymatchingattribute could help What I need is to find an attribute based on it's name (doing a case insensitive search). So casting to lower case all attributes, then searching the one I need and then getting the value is indeed what i was looking for, but without scripting, using el only Wkr Peter
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01-27-2021
02:36 AM
Hello, I have a HandleHttpRequest processor configured. I can access the headers as documented but unfortunately the flow file properties (http.headers.XXX) are case sensitive, so if I want to use one in some later processor using EL, I need to know the exact case used (e.g. http.headers.x-My-Header). As it's not possible to control the end that sends the http request I am stuck (unless I add some script processing to extract what I need). Also http spec wise, the header names are case insensitive. So, question - is there a 'standard EL way' to get hold of a header value that came with a HandleHttpRequest processor regardless of the case of the header name? Many thanks! Peter
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Apache NiFi
02-21-2020
11:23 AM
I ended up building from source based on 1.11.1 tag and then it works fine
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02-14-2020
04:40 AM
Hello
I used tls toolkit to generate keys and certificates
tls-toolkit.sh standalone -n localhost -C 'CN=admin,OU=NIFI'
Started the nifi through the 'latest' docker image
docker run --name securednifi \
-v /home/peter/playground/nifirenderdemo/certs:/opt/certs \
-p 8443:8443 \
-e AUTH=tls \
-e KEYSTORE_PATH=/opt/certs/localhost/keystore.jks \
-e KEYSTORE_TYPE=JKS \
-e KEYSTORE_PASSWORD="xyaCZWLb8GHM20/dghr6nL0p2Z8r6sK5Q81cRZAA/A0" \
-e TRUSTSTORE_PATH=/opt/certs/localhost/truststore.jks \
-e TRUSTSTORE_PASSWORD="4fmyZFm1FevdAmeYEsCHxjzSB/S8sAb+/9w7VQZ0Lms" \
-e TRUSTSTORE_TYPE=JKS \
-e INITIAL_ADMIN_IDENTITY='CN=admin,OU=NIFI' \
-d \
apache/nifi:latest
Passwords were copied from the locahost/nifi.properties file generated by tls-toolkit Certificates was imported in browser Trying to open nifi gives
Insufficient Permissions
Unknown user with identity 'CN=admin, OU=NIFI'. Contact the system administrator.
Checked - nifi.security properties in nifi.properties - users.xml - identity - authorizations.xml - identifier of policy elements matches users.xml
Noticed - The host in nifi.properties configured for nifi.remote.input.host refers to the docker host name (ca....) - In nifi-users.log there is
2020-02-14 10:56:53,454 INFO [main] o.a.n.a.FileAccessPolicyProvider Populating authorizations for Initial Admin: CN=admin,OU=NIFI
...
2020-02-14 10:57:43,063 WARN [NiFi Web Server-75] o.a.n.w.a.c.IllegalStateExceptionMapper java.lang.IllegalStateException: Kerberos ticket login not supported by this NiFi.. Returning Conflict response.
java.lang.IllegalStateException: Kerberos ticket login not supported by this NiFi.
at org.apache.nifi.web.api.AccessResource.createAccessTokenFromTicket(AccessResource.java:641)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
...
2020-02-14 10:57:43,362 WARN [NiFi Web Server-75] o.a.n.w.a.c.IllegalStateExceptionMapper java.lang.IllegalStateException: OpenId Connect is not configured.. Returning Conflict response.
java.lang.IllegalStateException: OpenId Connect is not configured.
at org.apache.nifi.web.api.AccessResource.oidcExchange(AccessResource.java:298)
...
2020-02-14 10:57:43,472 INFO [NiFi Web Server-21] o.a.n.w.s.NiFiAuthenticationFilter Attempting request for (CN=admin, OU=NIFI) GET https://localhost:8443/nifi-api/flow/current-user (source ip: 172.17.0.1)
2020-02-14 10:57:43,481 INFO [NiFi Web Server-21] o.a.n.w.s.NiFiAuthenticationFilter Authentication success for CN=admin, OU=NIFI
2020-02-14 10:57:43,817 INFO [NiFi Web Server-21] o.a.n.w.a.c.AccessDeniedExceptionMapper identity[CN=admin, OU=NIFI], groups[] does not have permission to access the requested resource. Unknown user with identity 'CN=admin, OU=NIFI'. Returning Forbidden response.
Not sure any of this is a real problem. I also do not immediately find information on the above in the context of two way ssl without ldap or registry
At this point I am out of inspiration tbh So, all tips really appreciated! Tx
Peter
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Apache NiFi
12-24-2019
03:43 AM
1 Kudo
Hello, Tx for your reaction Dennis. I was able to continue. The reason I was having issues seemed to be related to the fact that the Groovy script was a standard class with a static main method. It makes sense that Nifi does not accept that I guess, but the process of diagnosing such issue might be made easier imo. It was a trial and error task, and as you suggested, by starting from an example. Anyway, I am good now 🙂 Regards Peter
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12-19-2019
10:17 PM
Hello
I am trying to add an ExecuteGroovyScript processor. A simple example test works fine, but when I try to add my script it does not initiate. Exception (on hoover over) is really brief: InstantiationException thrown by groovy invokehelper. Script uses some external jars. As far as I can see I added those to the classpath.
I am probably doing something stupid but I was wondering how to debug this issue? The log files do not seem to contain anything wrt this error which makes troubleshooting very difficult
All tips warmly welcomed!
Tx
Peter
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Apache NiFi
03-10-2017
04:55 PM
Hello Having the same issue 😞 I find in the hive meta store log 2017-03-10 16:50:52,164 INFO [main]: zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:user.name=hive No idea where this is coming from though All tips appreciated!
Peter
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11-26-2016
09:34 PM
It seems that by removing the call to master('yarn') when building the SparkSession, the issue is gone.
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11-26-2016
04:17 PM
1 Kudo
Hello
I am trying to port a spark application from hdp2.3 to hdp2.5 and switch to spark2.
I always seem to run into an issue where the worker(s) cannot find pyspark Traceback (most recent call last):
File "t.py", line 14, in <module>
print (imsi_stayingtime.collect())
File "/usr/hdp/current/spark2-client/python/pyspark/rdd.py", line 776, in collect
port = self.ctx._jvm.PythonRDD.collectAndServe(self._jrdd.rdd())
File "/usr/hdp/current/spark2-client/python/lib/py4j-0.10.1-src.zip/py4j/java_gateway.py", line 933, in __call__
File "/usr/hdp/current/spark2-client/python/pyspark/sql/utils.py", line 63, in deco
return f(*a, **kw)
File "/usr/hdp/current/spark2-client/python/lib/py4j-0.10.1-src.zip/py4j/protocol.py", line 312, in get_return_value
py4j.protocol.Py4JJavaError: An error occurred while calling z:org.apache.spark.api.python.PythonRDD.collectAndServe.
: org.apache.spark.SparkException: Job aborted due to stage failure: Task 2 in stage 1.0 failed 4 times, most recent failure: Lost task 2.3 in stage 1.0 (TID 22, ip-10-0-0-61.eu-west-1.compute.internal): org.apache.spark.SparkException:
Error from python worker:
/usr/bin/python: No module named pyspark
PYTHONPATH was:
/hadoop/yarn/local/filecache/13/spark2-hdp-yarn-archive.tar.gz/spark-core_2.11-2.0.0.2.5.0.0-1245.jar
I can easily reproduce it with a very simple hive/spark test app e.g. import pyspark
from pyspark.sql import SparkSession
from operator import add
spark = SparkSession \
.builder \
.master('yarn') \
.appName("Ttt...111") \
.enableHiveSupport() \
.getOrCreate()
report = spark.sql("select imsi,tacs,sum(estimated_staying_time) as total_group_stayingtime from ... where ... group by tacs,imsi")
imsi_stayingtime = report.select('imsi','total_group_stayingtime').rdd.reduceByKey(add)
print (imsi_stayingtime.collect())
I tried to add the zip files (addPyFile), change the enviroment shell file and change spark.yarn.dist.files but nothing seems to help All tips are extremely welcome indeed! Tx Peter
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