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Questions tagged [row-key]

Each row of cassandra column family is uniquely identified by its row key, similar to the primary key in a relational table. A column family is partitioned on its row key, and the row key is implicitly indexed.

Each row of a column family is uniquely identified by its row key, similar to the primary key in a relational table. A column family is partitioned on its row key, and the row key is implicitly indexed.

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DataModel must implement org.primefaces.model.SelectableDataModel when selection is enabled, but I have already defined rowKey

I've a selectable PrimeFaces 3.4.1 datatable: …
Amira
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Why HBase rows are said to be stored as lexicographically sorted?

Based on the HBase documentation, again following the reference from the Google BigTable paper, the rows are said to be stored with lexicographic sorting of the row key. It is evident that the rows are sorted lexicographically when we have a string…
Betta
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How to auto generate a RowKey in a Azure table storage using C#

I am trying to change the RowKey from a predefined lastname from the Micorosft Docs tutorial: https://learn.microsoft.com/en-us/azure/cosmos-db/table-storage-how-to-use-dotnet#add-an-entity-to-a-table, to a unique value. This is my current…
user10190803
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HBase- Retrieve row based on parts of key

Consider we have a HBase table with rowkey Lname_Fname_DOB. Consider the following rowkeys were inserted in HBase table Cusack_Tim_06062006,Aptrow_Jill_07072007,Cruise_Tom_06052006. I have a UI, where users can enter the Fname Lname and DOB in…
user3646519
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Can Null values be part of RowKey in Hbase

We have some tables in form of Parent-child in sql server and we want transform them into a bigtable in hbase. I want use a composite Rowkey for this htable but i don't know if it is possible to have null value as part of rowkey.
Asma
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Retrieving Row Key from HBase table in Talend

I'm a novice to talend. I'm trying to read data from hbase and make some transformations on the data in expression builder using big data batch and write the output to a file. now i want to get the row key of the table and apply transformations on…
jack AKA karthik
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how to change (update) a hbase row key value from aaa to bbb for example?

how can I change a row key value in hbase this row key is made of some column in table and all the values doesn't come in same time. after update a value of a column i want to update the row key is it possible to do? for example i have c1 , c2 , c3…
reihaneh
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How to scan HBase with specific part of rowkey?

For example, rowkey is designed as aabbbbcccc, the bbbb part is the specific part which is used to index the record. How can I search HBase table with the bbbb part?
Sparrow Jack
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delete row key from cassandra cli

i set my column family gcgraceseconds to 0; but stills rowkey is not deleted it remains in my column family create column family workInfo123 with column_type = 'Standard' and comparator = 'UTF8Type' and default_validation_class = 'UTF8Type' …
Govind Singh
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Issue while reading Hbase in SPARK using rowkey

Aim: To read Hbase using Spark using rowkey Error: Exception in thread "main" java.lang.IncompatibleClassChangeError: Class org.apache.hadoop.hbase.client.RegionCoprocessorRpcChannel does not implement the requested interface…
Vahuja
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Extend HBase Put to avoid original Row Check in add method

HBase Need to export data from one cluster and import it to another with slight modification in row key As I have referred in above post, need to export the HBase data of table from one cluster and import it into the another cluster by changing row…
Roshan
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Efficiently scanning on composite row key in hbase

I have my hbase table structured as follows: a1:b1 a1:b2 a2:b1 a3:b2 Is there any way I can efficiently check if the first part of the row key exists in the hbase table? I do not want to retrieve the records, I just want to check if a1, a2, a3…
PythonBoi
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HBase prefixFilter works with startRow and PageFilter

In Hbase, I have rowkey like this : userId:timestamp:objectId. I'm trying to create a method like this: public List getObjectList(String userId, String startrowA, int limit) I want to get records with prefix userId, and also have…
Chao Jiang
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How to override Rowkey sorting in hbase table HFiles?

I wonder whether there is a way to override the Rowkey sorting strategies while creating a new hbase table? can I for example sort in inverse order? Thank you for your help :)
rafik_bougacha
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HBase rowkey design for column family desc order sorting

I am wondering whether I can design a rowkey in a hbase table in a way that the stored data will be DESC sorted following a column family data. Otherwise, is there any way to store data in a DESC ORDER following a specific column family? Thanks
rafik_bougacha
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