blob: 4454fd3dc3ec054e2b1f9aad70395466bf1de659 [file] [log] [blame]
---
title: Querying a Specific Member
---
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When a region is specified with both REPLICATE and REPLICATE_PROXY region shortcuts on the server, a
query could return a different result depending on the member on which it is executed.
Here is an example to illustrate this:
``` pre
gfsh>connect --locator "localhost[64570]"
Connecting to Locator at [host=localhost, port=64570] ..
Connecting to Manager at [host=localhost, port=20571] ..
Successfully connected to: [host=localhost, port=20571]
gfsh>describe region --name "portfolio"
Name : portfolio
Data Policy : replicate
Hosting Members : server-2
Non-Default Attributes Shared By Hosting Members
Type | Name | Value
------ | ----------- | ---------------
Region | data-policy | REPLICATE
| size | 10
| scope | distributed-ack
Name : portfolio
Data Policy : empty
Accessor Members : server-1
Non-Default Attributes Shared By Accessor Members
Type | Name | Value
------ | ----------- | ---------------
Region | data-policy | EMPTY
| size | 0
| scope | distributed-ack
```
In this example, if the query is executed on a member with REPLICATE_PROXY, the result will be `0`, as it will be a member without hosting data.
To cope with this issue, you can specify the `--member` option forcing the query to be run on a member hosting the data.
``` pre
gfsh>query --query="select ID, status from /portfolio where ID < 2"
Result : true
Limit : 100
Rows : 0
gfsh>query --query="select ID, status from /portfolio where ID < 2" --member="server-2"
Result : true
Limit : 100
Rows : 2
ID | status
–- | --------
0 | active
1 | inactive (edited)
```