About rchintaguntla

rchintaguntla · ‎02-25-2020

From the stack trace the hbase:meta region itself not available means you cannot operate anything. From HBase master/regionserver logs we need to find what's the reason for hbase:meta region is not getting assigned. Would you mind sharing the logs?

rchintaguntla · ‎07-13-2017

You need to add hbase-site.xml updated with transactions related configs to application classpath.

rchintaguntla · ‎07-13-2017

You can enable it by setting "hbase.replication.bulkload.enabled" to true in hbase-site.xml. For more information you can check release notes of https://issues.apache.org/jira/browse/HBASE-13153.

rchintaguntla · ‎07-11-2017

Are you creating table from phoenix sqlline or hive? When you create table from Phoenix client or sqlline then you don't need to provide all the information PhoenixStoragehandler and table properties.

rchintaguntla · ‎07-10-2017

When you know the row key you can use Get. HBase should automatically convert the Scan with same start and end key as get. With the get the block reads in a HFile are positional reads(better for random reads) than seek + read(better for scanning).

rchintaguntla · ‎06-29-2017

You need to create java.sql.Array by calling conn.createArrayOf with long array. For ex: Long[] longArr =new Long[2]; longArr[0] = 25l; longArr[1] = 36l; array = conn.createArrayOf("BIGINT", longArr); ps.setArray(3, array);

rchintaguntla · ‎04-17-2017

Exactly they won't be reflected.

rchintaguntla · ‎04-17-2017

0: jdbc:phoenix:sandbox:2181/h> EXPLAIN SELECT * FROM TRADE.TRADE ; +----------------------------------------------------------------------------+ | PLAN | +----------------------------------------------------------------------------+ | CLIENT 1-CHUNK PARALLEL 1-WAY ROUND ROBIN RANGE SCAN OVER TRADE:TRADE [1]| | SERVER FILTER BY FIRST KEY ONLY | Here it's going through deleted local index that means the data table PTable object is not updated after dropping the local index which is odd. When we drop the index we delete data from the local indexes but somehow the we are getting dropped local index from the meta data. The reason might be like when we drop the index dropped meta entries have very latest timestamp than 1490706922000. But when we set currentSCN=1490706922000 the meta data might be still visible.

rchintaguntla · ‎03-30-2017

Can you check whether the jar copied to local path at RegionServer? {hbase.local.dir}/jars

rchintaguntla · ‎03-30-2017

When you use the UDF in where condition it will be push down to region server. So you need to add the jar to hdfs so that the UDF will be automatically loaded at server. You can do proper configurations as below. http://phoenix.apache.org/udf.html#Configuration And upload the jar from sqlline using following query and try. add jar <local jar path>

rchintaguntla · ‎03-23-2017

At present you can remove the the stats of the view from SYSTEM.STATS with delete query. Something like this and see still getting the same issue. still if you are getting the same issue then restart the region server holding the SYSTEM.CATALOG table and close and reopen the connection. delete from SYSTEM.STATS where PHYSICAL_NAME=viewname

rchintaguntla · ‎03-23-2017

Ya got it. Just combining that from raw files is not possible. Instead you need to create two tables for CDR data and CRM data and you can write MR job or java client based on data size with following steps. 1) Scan CDR table and get Bnumber 2) Call get on CRM table to get the corresponding details. 3) Prepared puts from the get call on CRM and add them to the ROW get from CDR and write the CDR. or else you can use Apache Phoenix so that you can utilise UPSERT SELECT features which simplify things. http://phoenix.apache.org/ http://phoenix.apache.org/language/index.html#upsert_select

rchintaguntla · ‎03-23-2017

You can create a table with some column family of interest and run the ImportTsv on the both the files separately by specifying the Anumber field as HBASE_ROW_KEY then columns in the same Anumber will be combined into single row. Is this something you are looking? Ex: HADOOP_CLASSPATH=`${HBASE_HOME}/bin/hbase classpath` ${HADOOP_HOME}/bin/hadoop jar ${HBASE_HOME}/hbase-VERSION.jar importtsv -Dimporttsv.columns=HBASE_ROW_KEY,cf:age,cf:day_c,cf:month_c,cf:year_c,cf:zip_code,cf:offerType,cf:offer,cf:gender -Dimporttsv.bulk.output=hdfs://storefileoutput datatsv hdfs://inputfile HADOOP_CLASSPATH=`${HBASE_HOME}/bin/hbase classpath` ${HADOOP_HOME}/bin/hadoop jar ${HBASE_HOME}/hbase-VERSION.jar importtsv -Dimporttsv.columns=HBASE_ROW_KEY,cf:ContractCode,cf:Aoperator,cf:Bnumber, cf:Boperator, cf:Direction, cf:Type, cf:Month, cf:Category, cf:numberOfCalls, cf:duration, cf:longitude, cf:latitude -Dimporttsv.bulk.output=hdfs://storefileoutput datatsv hdfs://inputfile

rchintaguntla · ‎03-23-2017

You can increase phoenix.query.threadPoolSize to 256 or 512 based on number of machines/cores. and also increase phoenix.query.queueSize to 5000 and add hbase-site.xml to class path or export HBASE_CONF_DIR. You can refer http://phoenix.apache.org/tuning.html for more turning.

rchintaguntla · ‎03-23-2017

@Houssem Alayet is Anumber common and going to be row key for the table?

rchintaguntla · ‎03-23-2017

@Ashok Kumar BM What's your hfile block size is it defult 64 kb? If you are writing all 1 millions cells of a row at a time then better you can increase the block size. Are you using any data block encoding techniques which can improve the performance and also are you trying ROW or ROW_COL bloom filters?

rchintaguntla · ‎03-22-2017

The table details and corresponding stats are stale at the Region Server so that you might be getting StaleRegionBoundaryCacheException or else you might be hitting PHOENIX-2447. Once we drop the view the stats will be invalidated and then while querying after recreation of view the new stats from the system stats table will be repopulated so you are not seeing the same issue. There are many issues related to stats are fixed in Phoenix 4.7.0. So better you can upgrade to HDP 2.4 or above if you are using older versions or Phoenix to 4.7.0 in case of own clusters.

rchintaguntla · ‎12-30-2016

After rolling back the configurations have you restarted the server?

rchintaguntla · ‎12-30-2016

Then you need write bad line detection code in your map reduce job same as ImportTsv and add that as counter to job to find the number of bad lines. https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/TsvImporterMapper.java#L192

rchintaguntla · ‎12-30-2016

You have mentioned HDP version 2.4.2 and Phoenix Version as 4.7 But HDP 2.4.2 supports Phoenix version 4.4? Can you check the versions properly. You can upgrade to HDP 2.5 to use Name space feature supported. then things should work properly.

rchintaguntla · ‎12-30-2016

Are you using ImportTsv to import data from HDFS to HBase? If that's the case you can see "Bad Lines" counter value which gives the number of rows not proper as for the column details you have mentioned in the job. Bad Lines If you don't want to continue job in case of bad lines you can pass -Dimporttsv.skip.bad.lines=false to the import tsv job.

rchintaguntla · ‎12-21-2016

You need to include phoenix-spark-4.4.0-HBase-1.1.jar also to the jars list.

rchintaguntla · ‎12-20-2016

You can use dynamic columns feature supported by Phoenix for your use case. http://phoenix.apache.org/dynamic_columns.html bq. How do I know how many qualifiers are there for each row Until unless we scan through full row we cannot find the columns. This can be achieved by HBase APIs only. bq. select first and last qualifier data for keys in (1231, 321) If we don't know the columns we need to select all the columns and get first and last column values but dynamic columns won't be returned. You can try extendable views for this use case as well. https://phoenix.apache.org/views.html

rchintaguntla · ‎12-12-2016

You can create map hbase table into Hive as in below link https://cwiki.apache.org/confluence/display/Hive/HBaseIntegration then use Export/Import feature to replicate data. https://cwiki.apache.org/confluence/display/Hive/LanguageManual+ImportExport

rchintaguntla · ‎11-29-2016

You can use Thrift to connect to HBase through PHP. https://wiki.apache.org/hadoop/Hbase/ThriftApi You can find an example here https://github.com/apache/hbase/blob/master/hbase-examples/src/main/php/DemoClient.php

rchintaguntla · ‎11-29-2016

@ARUN Or else can you try something similar to type convertion. A = load 'hbase://query/select col1,col2.. from TRANSACTION' using org.apache.phoenix.pig.PhoenixHBaseLoader('localhost') as (rowKey:chararray,col_a:int, col_b:double, col_c:chararray);

rchintaguntla · ‎11-29-2016

Yes Export generate sequence files. If you want to import back the exported data to other HBase table in different cluster then you can use it other wise it won't help. Pig should map the data types properly. Can you try specifying the columns list than * and check. For eg: A = load 'hbase://query/select col1,col2.. from TRANSACTION' using org.apache.phoenix.pig.PhoenixHBaseLoader('localhost');

rchintaguntla · ‎11-29-2016

Better to go with @Ankit Singhal suggestion of using pig/hive or spark to export.

rchintaguntla · ‎11-29-2016

Phoenix pherf utility exports details like how much time the query took etc..not the data. There is no way to export data into csv from Phoenix. Can't you use Export utility provided by HBase.

rchintaguntla · ‎11-28-2016

There is a still chance that all data might be going to first or last regions of table. So better to find the best split keys based on row key data set to fix this issue.

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Date Registered	‎10-05-2015 06:30 AM
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Re: HBASE Bulk load cross-cluster replication

Re: creation of phoenix table

Re: Get or scan to use for retrieving the data,whe...

Re: Join two tables into one HBase table

Re: Select query getting below error for phoenix

Re: MR apps getting stuck at map 100% reduce 100%

Re: Enabling transaction in Phoenix issue

Re: HBASE Bulk load cross-cluster replication

Re: creation of phoenix table

Re: Get or scan to use for retrieving the data,whe...

Re: apache phoenix jdbctemplate PreparedStatement

Re: Phoenix flashback / snapshot (currentSCN) quer...

Re: Phoenix flashback / snapshot (currentSCN) quer...

Re: Running phoenix udfs from JAVA service

Re: Running phoenix udfs from JAVA service

Re: What will happen if we drop view and recrete i...

Re: Join two tables into one HBase table

Re: Join two tables into one HBase table

Re: Select query getting below error for phoenix

Re: Join two tables into one HBase table

Re: Hbase get operation performence

Re: What will happen if we drop view and recrete i...

Re: Cannot initiate connection as SYSTEM:CATALOG i...

Re: HBase data validation

Re: Cannot initiate connection as SYSTEM:CATALOG i...

Re: HBase data validation

Re: Phoenix “org.apache.phoenix.spark.DefaultSourc...

Re: Hbase table design through Phoenix

Re: Data migration from HBase to Hive

Re: How to query Hbase via PHP script ?

Re: Exporting a phoenix table into a csvfile

Re: Exporting a phoenix table into a csvfile

Re: Exporting a phoenix table into a csvfile

Re: Exporting a phoenix table into a csvfile

Re: Reducer is Running extremely slow in Bulk Impo...