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How useful are tools for Hive data modeling - Hive - [mail # user]
...Hi,Fundamentally Hive tables have structure and support provided by descformatted  and show partitions .Hive does not support indexes in real HQL operations (I stand corrected).So what ...
   Author: Mich Talebzadeh , 2020-04-02, 11:17
[expand - 4 more] - can we all help use our expertise to create an IT solution for Covid-19 - Spark - [mail # user]
...Hi all,Many thanks for your contribution.A number of colleagues have proposed existing sites devoted to analyzingthis virus mainly in US and North America. Also donating computers etc.althou...
   Author: Mich Talebzadeh , 2020-03-26, 20:59
[expand - 5 more] - Spark reading from Hbase throws java.lang.NoSuchMethodError: org.json4s.jackson.JsonMethods - HBase - [mail # user]
...Hi,Does anyone has any more suggestion for the error I reported below please?Thanks,Mich*Disclaimer:* Use it at your own risk. Any and all responsibility for anyloss, damage or destruction o...
   Author: Mich Talebzadeh , 2020-02-23, 19:13
[expand - 1 more] - Running HBase on Hadoop 3.1, was Re: [ANNOUNCE] Apache HBase 2.1.9 is now available for download - HBase - [mail # user]
...Thanks Nick.My bad. One of the nodes holding region server did not have Snappy packageinstalled.yum install snappy snappy-devel did the trickRegards,Dr Mich TalebzadehLinkedIn * https://www....
   Author: Mich Talebzadeh , 2020-02-21, 22:34
[expand - 1 more] - [ANNOUNCE] Apache HBase 2.1.9 is now available for download - HBase - [mail # user]
...Thank you.In your points belowIf you want to run HBase on top of a 3.1.x HDFS cluster, you can just usethe binaries, hadoop 2.8.5 client can communicate with 3.1.x server.If you want HBase t...
   Author: Mich Talebzadeh , 2020-02-20, 11:20
[expand - 5 more] - How to insert Json records from Flume into Hbase with Kafka source - Flume - [mail # user]
...Hi,This regex seems to work*JsonAgent.sinks.Hbase-sink.serializer.regex=[^_]*"(.+).{1},(.+),(.+),(.+).{1}*Remember we were getting the below as ROW (incorrect) beforehand{"rowkey":"eff0bdc7-...
   Author: Mich Talebzadeh , 2020-02-16, 20:26
[expand - 2 more] - How to insert Json records from Flume into Hbase table - HBase - [mail # user]
...Thanks Pedro. The mention of*org.apache.flume.sink.hbase.RegexHbaseEventSerializer* was very useful.This works# Describing/Configuring the sinkJsonAgent.channels.hdfs-channel-1.type = memory...
   Author: Mich Talebzadeh , 2020-02-14, 20:25
[expand - 1 more] - OrderBy Year and Month is not displaying correctly - Spark - [mail # user]
...*The distinct transformation does not preserve order, you need to distinctfirst, then orderby.*Thanks Enrico. You are correct. Worked fine!joint_accounts.      select(year(col...
   Author: Mich Talebzadeh , 2020-01-06, 12:05
Spark streaming when a node or nodes go down - Spark - [mail # user]
...Hi,I know this is a basic question but someone enquired about it and I justwanted to fill my knowledge gap so to speak.Within the context of Spark streaming, the RDD is created from the inco...
   Author: Mich Talebzadeh , 2019-12-11, 10:28
kafka connection from docker - Kafka - [mail # user]
...I do not understand this.You have on a physical host running zookeeper locally and a broker runningas well. These are using default physical host portslike 2181, 9092 etc.Then you have insta...
   Author: Mich Talebzadeh , 2019-10-17, 21:36