Replicate Phoenix tables to COD for versions lower than 4.14
For Phoenix versions lower than 4.14, you must treat both the Phoenix data tables and Phoenix index tables similar to any other HBase table.
Copy the contents of your Phoenix data table in the source cluster to COD in
the same manner that you would do for an HBase table (either using CDP
Replication Manager or through the HBase ExportSnapshot utility). To copy the
contents of the Phoenix data table, see HBase migration steps 1-11.
hbase> disable 'myTable' hbase> restore_snapshot 'myTableSnapshot-122112'
- Validate that the data is readable by scanning the restored table in HBase through hbase shell before proceeding further.
- Verify if the corresponding HBase table for your Phoenix data table exists in COD.
- Obtain the DDL statement (“create table”) that you have used to create the table in your legacy system.
Run the create-table command in phoenix-sqlline in COD with the option
COLUMN_ENCODED_BYTES=0 appended to it.
For example, if the original create table statement is: jdbc:phoenix> CREATE TABLE MY_DATA(rk VARCHAR NOT NULL PRIMARY KEY, col1 INTEGER) SALT_BUCKETS = 4; The corresponding statement to run in COD will be: jdbc:phoenix> CREATE TABLE MY_DATA(rk VARCHAR NOT NULL PRIMARY KEY, col1 INTEGER) SALT_BUCKETS = 4, COLUMN_ENCODED_BYTES=0;
This option disables the column encoding feature, which is enabled by default since Phoenix versions 4.14 till 5.0. This feature uses binary representations in the HBase column qualifier rather than the column name provided to Phoenix. If the data in the Phoenix table does not match this configuration, Phoenix does not display any data on query but the data appears if queried through the HBase APIs. Running a create table command when an HBase table already exists creates the corresponding internal Phoenix metadata while leaving all other data in place.
- Validate that query using phoenix-sqlline. This must return the expected data from your Phoenix table.