[#HADOOP-5743] Configuration: Hierachical; documented; null-safe; thread-safe

Hadoop Common

Created: 24/Apr/09 07:27 PM Updated: 04/Jun/09 08:40 AM

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Component/s:

conf

Affects Version/s:

None

Fix Version/s:

None

Time Tracking:

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This issue is related to:

~~HADOOP-5708~~ Configuration should provide a way to write only properties that have been set

Release Note:

Second draft will satisfy comments in 5708, but leaves questions outstanding.

Description

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Patch to configuration to:

Update documentation to match code
Make configurations hierarchical
Remove global REGISTRY of configurations
Adding global default does not reload child configurations
(Eventually) make properly thread-safe
Allow well-behaved overriding with nulls
Allow future satisfaction of ticket 5708 (with which I agree, but Doug does not).

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Shevek made changes - 24/Apr/09 07:28 PM

Field	Original Value	New Value
Link		This issue is related to ~~HADOOP-5708~~ [ ~~HADOOP-5708~~ ]

Shevek made changes - 24/Apr/09 07:29 PM

Attachment

01_configuration.patch [ 12406385 ]

Shevek made changes - 24/Apr/09 08:48 PM

Attachment

02_configuration.patch [ 12406396 ]

Shevek made changes - 24/Apr/09 08:50 PM

Release Note	Patch attached is first draft, second draft will satisfy comments in 5708.	Second draft will satisfy comments in 5708, but leaves questions outstanding.
Status	Open [ 1 ]	Patch Available [ 10002 ]

Devaraj Das made changes - 04/Jun/09 08:40 AM

Assignee		Shevek [ arren ]
Status	Patch Available [ 10002 ]	Open [ 1 ]