Hbase client programming (Eclipse)

Hadoop stepping on the pit (4) Hbase client programming (Eclipse) Environmental Science For the installation and configuration of Hbase and the configuration of Eclipse, please refer to the previous two articles The version of hbase used in this series is 1.4.13 The selected hadoop version of this series is 2.8.5 Please pay attention to the per ...

Posted by Quest on Sun, 28 Jun 2020 21:59:57 -0700

HBase2 uses coprocessor to delete all data of the specified qualifier

In the user portrait scenario, many tags are usually developed. As a qualifier, each tag needs to be offline after some tags are no longer in use. However, the delete related api provided by hbase can only be used for a single line. It is not easy to clean up all the data of a qualifier. Here we provide an implementation scheme based on coproce ...

Posted by amchargue on Thu, 28 May 2020 08:18:34 -0700

HBase2 uses coprocessor to delete all data of the specified qualifier

In the user portrait scenario, many tags are usually developed. As a qualifier, each tag needs to be offline after some tags are no longer in use. However, the delete related api provided by hbase can only be used for a single line. It is not easy to clean up all the data of a qualifier. Here we provide an implementation scheme based on coproce ...

Posted by psn on Thu, 28 May 2020 08:17:55 -0700

phoenix-5.0.0 and CDH6.0.1 compatibility cause secondary index unavailable

Today, when testing phoenix's secondary index function, the following exception occurred when the index was created to write data: Caused by: org.apache.hadoop.hbase.client.RetriesExhaustedWithDetailsException: Failed 1 action: org.apache.phoenix.hbase.index.builder.IndexBuildingFailureException: Failed to build index for unexpected reason! ...

Posted by superhaggis on Sat, 09 May 2020 07:38:49 -0700

Hbase API create table error record for Docker container deployment cluster

Hbase API create table error record Demo method: import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.hbase.HBaseConfiguration; import org.apache.hadoop.hbase.HColumnDescriptor; import org.apache.hadoop.hbase.HTableDescriptor; import org.apache.hadoop.hbase.TableName; import org.apache.hadoop.hbase.client.Admin; import ...

Posted by spartan7 on Tue, 05 May 2020 16:37:36 -0700

Hbase API create table error record for Docker container deployment cluster

Hbase API create table error record Demo method: import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.hbase.HBaseConfiguration; import org.apache.hadoop.hbase.HColumnDescriptor; import org.apache.hadoop.hbase.HTableDescriptor; import org.apache.hadoop.hbase.TableName; import org.apache.hadoop.hbase.client.Admin; import org.apa ...

Posted by fusionxn1 on Thu, 30 Apr 2020 02:57:56 -0700

The Comparator principle and source code learning of HBase Filter

**Foreword: * * last article HBase Filter overview This paper briefly introduces the composition and genealogy of HBase Filter. This paper mainly introduces the comparator of HBase Filter, which is also the necessary low-level soul skill for learning HBase Filter. The source code in this article is based on HBase 1.1.2.2.6.5.0-292 HDP version. ...

Posted by Oni on Sat, 25 Apr 2020 06:53:54 -0700

HBase operation: Spark read HBase snapshot demo share

**Before * * I shared with you a small demo of Spark reading HBase directly through the interface: HBase-Spark-Read-Demo However, if the amount of data is very large, Spark's direct scanning of HBase table will inevitably cause a lot of pressure on HBase cluster. Based on this, today I'd like to share with you the way spark directly reads HBas ...

Posted by vapokerpro on Fri, 17 Apr 2020 08:28:05 -0700

Reader's Letter|If you have too many Region s in your HBase cluster, take a look at this problem, which you may encounter

Preface: Reader's Letter is a question and answer column opened by the old HBase store, which aims to solve HBase-related problems frequently encountered in the work for more small partners.The store will try its best to help you solve these problems or give you a help. The store hopes this will be a small platform to help each other.If you hav ...

Posted by chatmaster on Mon, 06 Apr 2020 20:35:23 -0700

HBase-1.2.1 cluster building

1.hbase is a distributed system, which needs to rely on HDFS as the storage medium and zookeeper to complete the monitoring of the master-slave nodes. 2. Installation preparation is as follows: 1.HBase role HMaster (master node, one Active, one StandBy) Hreginserver (data node, multiple) 2. dependence HDFS cluster, zookeeper cluster [start] ...

Posted by upnxwood16 on Fri, 27 Mar 2020 07:23:00 -0700