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# Phoenix Omid Transaction Manager (/docs/addons/phoenix-omid

https://phoenix.apache.org/llms-full.txt
Currently, it supports HBase integration through Apache Phoenix, and can be extended with other implementations

The Phoenix Query Server provides an alternative means for interaction

https://phoenix.apache.org/docs/features/query-server
Metrics can be filtered based on certain tags, which can be configured by the property specified in hbase-site

Create, deploy, and manage custom Phoenix UDFs with configuration

https://phoenix.apache.org/docs/features/user-defined-functions
Add the following parameters to hbase-site

OLTP and operational analytics for Apache Hadoop

https://phoenix.apache.org/docs
HBase as its backing store Apache Phoenix is fully integrated with other Hadoop products such as Spark, Hive, Pig, Flume, and MapReduce

Concepts, setup, consistency guarantees, and tooling for Phoenix

https://phoenix.apache.org/docs/features/secondary-indexes
Uncovered indexes lift that restriction — Phoenix can use a global index even when the query needs columns that aren't in it, by joining back to the data table on the server side to fetch the missing columns (PHOENIX-6458)

Bulk Loading

https://phoenix.apache.org/docs/features/bulk-loading
The first option can be done by running: sudo -u hbase hadoop jar phoenix-<version>-client

Tracing

https://phoenix.apache.org/docs/features/tracing
A default HBase deployment already includes a Metrics2 configuration, so Phoenix Metrics2 config can either replace the existing file (if you do not have custom settings) or be merged into your existing Metrics2 configuration file

Apache PhoenixApache Phoenix

https://phoenix.apache.org/
Apache Phoenix, Phoenix, Apache, the Apache Phoenix logo and the ASF logo are either registered trademarks or trademarks of the Apache Software Foundation

Configure and use transactional tables in Phoenix with Tephra, including

https://phoenix.apache.org/docs/features/transactions
Set up a system to use transactions in Phoenix with the following steps: Add the following config to your client-side hbase-site

Download and expand the latest phoenix-hbase-[hbase.version]-[phoenix.

https://phoenix.apache.org/docs/installation
If you'd rather use a client GUI to interact with Phoenix, download and install SQuirrel

Discuss your changes on the dev mailing list

https://phoenix.apache.org/docs/contributing
If you're unsure whether certain behavior in Phoenix is a bug, please send a mail to the user mailing list to check

Execute the following statements when Sqlline connects:

https://phoenix.apache.org/docs/faq
You can see in explain plan if Phoenix is using the index table

Configure Phoenix column mapping and immutable storage encoding for

https://phoenix.apache.org/docs/features/storage-formats
These defaults can be overridden by setting the following config value in hbase-site

Request-level and global Phoenix client metrics, with practical usage

https://phoenix.apache.org/docs/features/metrics
Request level metrics can be turned on/off for every Phoenix JDBC connection

High Availability

https://phoenix.apache.org/docs/features/high-availability
enabledfalse — set true in the source cluster's hbase-site

Salted Tables

https://phoenix.apache.org/salted.html
During a parallel scan across regions, Phoenix can use this property to perform a client-side merge sort

SQL Grammar

https://phoenix.apache.org/docs/grammar
Otherwise, data is buffered on the client and, if auto commit is on, committed in row batches as specified by the UpsertBatchSize connection property (or the phoenix

SQL Functions

https://phoenix.apache.org/docs/functions
Please see the Data Type reference guide about how Apache Phoenix presently defines the DATE datatype

PhoenixSyncTable Tool

https://phoenix.apache.org/docs/features/phoenix-sync-table
PhoenixSyncTable Tool Detect data divergence between a source and a target Phoenix table across two HBase clusters via a chunked hash comparison driven by MapReduce

Document Data: BSON

https://phoenix.apache.org/docs/features/bson
The point of the type is not just to hold documents — it's that Phoenix can read, filter, and mutate individual fields on the server without the client ever deserializing the whole document

PHOENIX_ROW_TIMESTAMP()

https://phoenix.apache.org/docs/features/phoenix-row-timestamp
If you have declared one, both mechanisms read/write the same underlying timestamp, so PHOENIX_ROW_TIMESTAMP() returns the value of the ROW_TIMESTAMP column for that row

How Phoenix collects and uses guidepost statistics for query

https://phoenix.apache.org/docs/features/statistics-collection
can occur in Phoenix versions earlier than 4

Define updatable and read-only Phoenix views over shared HBase tables

https://phoenix.apache.org/docs/features/views
Note that until PHOENIX-1499 gets implemented, an INDEX over a VIEW is only maintained if the updates are made through the VIEW (as opposed to through the underlying TABLE)

Enable Phoenix schema-to-namespace mapping in HBase, including

https://phoenix.apache.org/docs/features/namespace-mapping
0 onward, users can map Phoenix schemas to HBase namespaces so that any table created with a schema is created in the corresponding HBase namespace

Phoenix join support, join execution strategies, optimization techniques

https://phoenix.apache.org/docs/joins
Phoenix will extract and sort multiple key parts from the join keys so that it can get the most accurate key hints/ranges possible for the parent table scan

Segment Scan

https://phoenix.apache.org/docs/features/segment-scan
Segment Scan Get N evenly-bucketed key ranges for a Phoenix table so a client can drive a parallel full-table scan

Use IN/EXISTS/comparison subqueries, correlated subqueries, row

https://phoenix.apache.org/docs/subqueries
Use IN/EXISTS/comparison subqueries, correlated subqueries, row subqueries, and derived tables in Phoenix

Change Data Capture (CDC)

https://phoenix.apache.org/docs/features/change-data-capture
Change Data Capture turns a Phoenix table into a stream of change events that downstream consumers can read using regular SQL

View TTL

https://phoenix.apache.org/docs/features/view-ttl
A Phoenix view is a logical table that shares a single physical HBase table with its sibling views

Eventually Consistent Global Indexes

https://phoenix.apache.org/docs/features/eventually-consistent-indexes
An eventually consistent global index behaves like a regular Phoenix global index at the SQL level — same DDL, same INCLUDE, same query planning — but Phoenix maintains it asynchronously instead of on the synchronous write path