[#KATTA-96] upgrade mechanism for katta - 101tec's open source projects.

Katta

upgrade mechanism for katta

Created: 08/Dec/09 12:25 PM Updated: 06/Jan/10 03:52 PM

Component/s:

cluster

Affects Version/s:

0.5.1

Fix Version/s:

0.6

Description

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~~KATTA-43~~ probably includes changes in the internal zk file structure. There should be a simple mechanism that a existing 0.5 cluster can be upgraded to 06 (and for future versions as well).

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Johannes Zillmann added a comment - 08/Dec/09 12:27 PM

i would try to have a mechanism which is triggered on startup instead of having a separate commad like for hadoop.

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Johannes Zillmann added a comment - 06/Jan/10 03:52 PM

implemented a simple mechanism.
There is a UpgradeRegistry where one can register UpgradeActions.
There is now one UpgradeAction for 0.5 -> 0.6. It simply reads all the old index metadata and recreates it in the new system + remove obsolete zk folders.
Its automatically executed on cluster start on the master.