Loading HBase table into HDFS

Can any one please guide me to load the HBase table in to HDFS with specific columnfamily. thank, karthik

Re: Loading HBase table into HDFS

You can use export command, but not sure if u can export just one column family http://hbase.apache.org/0.94/book/ops_mgt.html#export On Sep 21, 2016 10:42 PM, "Dima Spivak" wrote: > Hey Karthik, > > This blog post [1] by our very own JD Cryans is a good place to start >

Re: Loading HBase table into HDFS

By specifying "hbase.mapreduce.scan.column.family", you can export selected column family. On Wed, Sep 21, 2016 at 8:49 AM, sudhir patil wrote: > You can use export command, but not sure if u can export just one column > family

Re: Loading HBase table into HDFS

Can you clarify your scenario ? Normally hbase is backed by hdfs - the table is already stored on hdfs. Cheers On Wed, Sep 21, 2016 at 4:46 AM, karthi keyan wrote: > Can any one please guide me to load the HBase table in to HDFS with > specific columnfamily. > >

Re: Loading HBase table into HDFS

Hey Karthik, This blog post [1] by our very own JD Cryans is a good place to start understanding bulk load. 1. http://blog.cloudera.com/blog/2013/09/how-to-use-hbase-bulk-loading-and-why/ On Wednesday, September 21, 2016, karthi keyan wrote: > Can any one please

Hbase throttling issues

Hi Hbase experts, Our application is unable to scan or read from hbase tables, when throttling is set. We are getting ThrottlingException every time. The error is seen more frequently when the number of hbase pre splits is increased. The size tables for which this error is showing is empty (

Re: Hbase throttling issues

Did you try to use REQUEST_NUMBER as throttle type? 2016-09-22 11:33 GMT+08:00 Sumit Nigam : > Hi Guanghao, > > This throttling error shows up as soon as I start hbase. So, ideally there > shouldn't be too many prior operations in play here. Plus, the error shows >

Re: Hbase throttling issues

No, did not try request number. I want to use size as my throttling factor.  Thanks again! From: Guanghao Zhang To: user@hbase.apache.org; Sumit Nigam Sent: Thursday, September 22, 2016 9:28 AM Subject: Re: Hbase throttling issues Did you

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Re: Hbase throttling issues

Hi Guanghao, This throttling error shows up as soon as I start hbase. So, ideally there shouldn't be too many prior operations in play here. Plus, the error shows up even when my table has hardly any data (possibly in kbs) and I have set throttling limit to be ~10GB. Thanks,Sumit From:

Re: Hbase throttling issues

All scan operations were throttled? Now it use the avg size of all previous operations to check quota. Maybe the previous scan operation read too much data. 2016-09-22 1:18 GMT+08:00 Sumit Nigam : > Hi Hbase experts, > > Our application is unable to scan or read

Re: Increased response time of hbase calls

Which hbase release are you using ? Can you tell us the values for handler related config such as hbase.regionserver.handler.count ? How many regions does m7 have ? Have many servers does m7 span ? Are regions of m7 spread evenly ? Thanks ​

Increased response time of hbase calls

Hi all I am facing an issue while accessing data from an hbase m7 table which has about 50 million records. In a single Api request, we make 3 calls to hbase m7. 1. Single Multi get to fetch about 30 records 2. Single multi-put to update about 500 records 3. Single multi-get to fetch about 15