Callen Wu, Author at Perficient Blogs
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Callen Wu

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How to Load Data to Hbase – doBulkLoad

We can use TableMapReduceUtil.initTableReducerJob and put the method in Hbase API, but we can also use doBulkLoad to load data to Hbase. In a previous post, I introduced using importtsv and completebulkload hbase shell command to load data to Hbase. In this post, I will introduce how to implement it by JAVA language. Advantage: Put method in […]

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3 Ways to Load Data From HDFS to HBase

Apache HBase™ is the Hadoop database: a distributed, scalable, big data store. If you are importing into a new table, you can bypass the HBase API and write your content directly to the filesystem, formatted into HBase data files (HFiles). Your import will run much faster. There are several ways to load data from HDFS to HBase. I […]

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Purge Cache Automation in OBIEE 11g

Why do we Purge Cache Automatically? The cache option in OBIEE 11g can help us to improve query performance greatly. But sometimes when we refresh the data mapping or reload the transaction data, the result over report will be out of date and not refreshed immediately due to cache. The best way is that we […]

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