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From "Elek, Marton (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDDS-225) Provide docker-compose files to check the scalability of KSM
Date Thu, 05 Jul 2018 09:01:00 GMT
Elek, Marton created HDDS-225:

             Summary: Provide docker-compose files to check the scalability of KSM
                 Key: HDDS-225
                 URL: https://issues.apache.org/jira/browse/HDDS-225
             Project: Hadoop Distributed Data Store
          Issue Type: Improvement
            Reporter: Elek, Marton

I open this jira to start a discussion. The main question: how can we prove the scalability
of KSM with minimal effort?

1. The goal is to prove that KSM could handle 1-10 billion of keys without any problem.

2. 10 000 000 000 * 10 kbyte object = 10 Terrabyte space. But we need to test only the KSM

3. With a low level data generator we can generate the volumes/buckets/keys directly to the
ksm.db (rocksdb). We can fake the block allocation and use exactly the same containerid/localid
for all the keys. With this method we can test the read/list methods without any problems
(all of the keys could be downloaded.

4. With this storage optimization we can  test 10 billion keys locally with a specific docker-compose
setup where the local db-s are mounted from the local directory

5. The data could be generated (takes some time) or could be uploaded after a generation


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