[jira] [Comment Edited] (IGNITE-4210) CacheLoadingConcurrentGridStartSelfTest.testLoadCacheFromStore() test lose data.

["Alexey Kuznetsov (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IGNITE-4210?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16456279#comment-16456279 ] 

Alexey Kuznetsov edited comment on IGNITE-4210 at 4/27/18 12:12 PM:
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The root cause of the bug identified.
grid.cache(DEFAULT_CACHE_NAME).loadCache(null) performs cache loading only on few nodes(ususally one) because other nodes are in the middle of process of joining cluster.

In unstable topology(multiple nodes join cluster) some entries aren't get loaded into the cache , because partitions cannot be reserved. Partitons concurrently are evicted, moved to other nodes while PME.

I put cache lock on topology before grid.cache(DEFAULT_CACHE_NAME).loadCache(null), and unlocked it after loading. Test passes.

So, we should lock topology before cache loading, or retry loading after topology is settled down.


was (Author: alexey kuznetsov):
The root cause of the bug identified.
grid.cache(DEFAULT_CACHE_NAME).loadCache(null) performs cache loading only on few nodes(ususally one) because other nodes are in the middle of process of joining cluster.

In unstable topology(multiple nodes join cluster) some entries aren't get loaded into the cache , because partitions cannot be reserved. Partitons concurrently are evicted and moved to other nodes while PME.

I put cache lock on topology before grid.cache(DEFAULT_CACHE_NAME).loadCache(null), and unlocked it after loading. Test passes.

So, we should lock topology before cache loading, or retry loading after topology is settled down.

> CacheLoadingConcurrentGridStartSelfTest.testLoadCacheFromStore() test lose data.
> --------------------------------------------------------------------------------
>
>                 Key: IGNITE-4210
>                 URL: https://issues.apache.org/jira/browse/IGNITE-4210
>             Project: Ignite
>          Issue Type: Bug
>            Reporter: Anton Vinogradov
>            Assignee: Alexey Kuznetsov
>            Priority: Major
>              Labels: MakeTeamcityGreenAgain
>
> org.apache.ignite.internal.processors.cache.distributed.CacheLoadingConcurrentGridStartSelfTest#testLoadCacheFromStore sometimes have failures.



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