[HBASE-4429] Provide synchronous balanceSwitch() - ASF JIRA

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Details

Type: Task
Status: Closed
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 0.94.0
Component/s: None
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synchronousBalanceSwitch() has been added to HMaster.
It waits until current balance() call, if outstanding, to return.

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synchronousBalanceSwitch() has been added to HMaster. It waits until current balance() call, if outstanding, to return.

Description

Currently balanceSwitch() doesn't guarantee that balancer isn't running upon return.
During code review of ~~HBASE-4213~~, we found that synchronous behavior for turning off balancer is desired.
We can add blockingBalanceSwitch() to HMasterInterface upon whose return balancer is guaranteed not running.

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4429.txt
19/Sep/11 10:48
3 kB
Ted Yu

Issue Links

is depended upon by

HBASE-4213 Support for fault tolerant, instant schema updates with out master's intervention (i.e with out enable/disable and bulk assign/unassign) through ZK.

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Assignee:: Ted Yu

Reporter:: Ted Yu

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Dates

Created:: 18/Sep/11 01:23

Updated:: 12/Oct/12 05:35

Resolved:: 19/Sep/11 20:27