About raniaa

raniaa · ‎10-10-2022

Hi, I've successfully installed Ambari server/agent 2.7.5 on my Centos 7 machine. Now i am facing an issue while installing a cluster in the install wizard at the "Select version" step. I have no versions showing in my dropdown. What can be the issue? ps: i have these in my /var/lib/ambari-server/resources/stacks/HDP

raniaa · ‎02-01-2022

Hi, I have installed Ranger in my CDP cluster with RangerAdmin, Tagsync and Usersync instances. I have a problem when trying to access the admin web UI (6080) with the credentials admin:admin or ranger:ranger. I get "Unable to connect to DB" on the interface and WARN com.mchange.v2.resourcepool.BasicResourcePool: Having failed to acquire a resource, com.mchange.v2.resourcepool.BasicResourcePool@2bf8ec30 is interrupting all Threads waiting on a resource to check out. Will try again in response to new client requests. WARN com.mchange.v2.resourcepool.BasicResourcePool: com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@781133d5 -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception: org.postgresql.util.PSQLException: FATAL: password authentication failed for user "ranger" in the ranger-admin log. Is there a way to verify what the username and password for the web UI are ? otherwise is there a way to create a hive security policy through commands without accessing the UI ? Thank you.

raniaa · ‎01-21-2022

Indeed @DigitalPlumber , EvaluateXpath can't handle variables, only an Xpath. Queryrecord might be an alternative if i was using another type of file but since im using an XML file and this processor performs an SQL Query what can be my parameters in the query ?

raniaa · ‎01-20-2022

Hi @DigitalPlumber thanks for your response, im actually dealing with an XML file so i need to use EvaluateXpath to extract values from my file ( i have Getfile -> SplitXml -> EvaluateXpath in my flow). On the other hand i have a CSV file that im extracting a value from ( i have another flow Getfile -> UpdateAttribute -> QueryRecord -> ReplaceText-> UpdateAttribute) My goal is to pass the value of the UpdateAttribute into the EvaluateXpath so i can extract a value from my XML file based on the ouput value extracted from my CSV.

raniaa · ‎01-19-2022

Hi, I'm trying to pass an output value of a processor dynamically into another and use it as a new property , here is my flow: ReplaceText (gives the output)-> UpdateAttribute (i created a property which value is referencing output) -> EvaluateXpath ( i want to pass this value in a new property here) . I tried passing it by ${property_name} and $property_name but nothing works. Is it impossible to have a property referencing another in the EvaluateXpath processor ? Thanks.

raniaa · ‎01-18-2022

Thank you for your response , so do you think that maybe because i shut down the virtual machines everyday the data is sometimes lost ? it is very unusual since the issue now is not happening every time but sometimes hdfs is corrupt and shows blocks missing and sometimes it's healthy from the start so i don't know what to think of it.

raniaa · ‎01-17-2022

I suggest you try to set your path with "\" instead of "/" for example: C:\Users\kiran\Downloads\mysql\mysql-connector-java-8.0.17.jar it worked out for me!

raniaa · ‎01-14-2022

Thank you @GangWar i tried these steps before and turns out that i had been modifying these parameters in the wrong core-site.xml file , it works just fine now 😉

raniaa · ‎12-27-2021

Hello, When trying to access Hbase through Hue i have this error in the log WARN org.eclipse.jetty.server.HttpChannel: handleException / org.apache.hadoop.security.authorize.AuthorizationException: User: hbase is not allowed to impersonate hue knowing that i had set a Thrift Server instance on Hbase and it is running okay.

raniaa · ‎12-24-2021

Try to clean your metadata with ./hbase-cleanup.sh --cleanAll command and restart your services. If you get "Regionservers are not expired. Exiting without cleaning hbase data" stop Hbase service before running the command.

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Cloudera Community

Ambari UI not showing versions in cluster installa...

Ranger authentication failure on CDP

Re: Use a variable in a processor

Re: Use a variable in a processor

Use a variable in a processor

Re: HDFS blocks missing at every restart of CM clu...

Re: "Can't load database driver" in CaptureChanges...

Re: User hbase is not allowed to impersonate hue

User hbase is not allowed to impersonate hue

Re: HBase Installation ERROR: KeeperErrorCode = No...