Bug 6144 – LIGO: Steamlined RLS startup

Bug 6144 - LIGO: Steamlined RLS startup

Summary:

LIGO: Steamlined RLS startup

Status:	RESOLVED FIXED

Product:	Replica Location
Component:	Roadmap
Version:	development
Platform:	All All

Importance:	P3 enhancement
Target Milestone:	---
Assigned To:	Ann Chervenak

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2008-06-09 19:13 by Rob S
Modified:	2009-11-12 16:42 (History)

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Description From Rob S 2008-06-09 19:13:04

At RLS startup, it (re)generates the catalog's bloom filter index. At large
scale, this step can take "very long". During this time, the RLS is in an
intermediate state unable to respond to pings, queries, etc.

This enhancement requests that the RLS generate its bloom filter in the
background while allowing it to service the rest of its operations.

------- Comment #1 From Scott Koranda 2008-07-16 11:34:33 -------

Comments from Globus/LIGO call:

The RLS create, delete, rename LFN operations depends on bloom filter being
there.  One solution is to cache those operations, but that might be a problem
with overflow. Another option is to just have it answer "come back later".
Rob thinks caching adds is doable, but deletes would be harder.

"Operation not available" response is significantly easier than caching. Easy
first step. 

Rob will think about and then send an email that discusses the relative amount
of work needed for this RFE and then ask LIGO again for help with
prioritization.

------- Comment #2 From Rob S 2009-11-12 16:42:50 -------

Committed to trunk for gt5 release.