I am aware that BigTable supports operations append and increment using ReadModifyWriteRow requests, but I’m wondering if there is support or an alternative way to use more generic mapping functions where the value from the cell can be accessed and modified within some sort of closure? For instance, bitwise ANDing a long value in a cell: Answer Doing a mapping
Tag: hbase
Unable to submit concurrent Hadoop jobs
I am running Hadoop 2.7 on my local machine, along with HBase 1.4 and Phoenix 4.15. I have written an application which submits map reduce jobs that delete data in HBase through Phoenix. Each job is run by an individual thread of a ThreadPoolExecutor and looks like this: Everything is fine if there is only 1 thread in the ThreadPoolExecutor.