[IGNITE-3240] Arrays do not deserialize properly

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.1.4
• Fix Version/s: 1.7
• Component/s: binary, cache
• Assignee: Denis A. Magda
• Reporter: Pavel Tupitsyn
• Created: 02/Jun/16 15:16
• Updated: 06/Jun/16 11:57
• Resolved: 06/Jun/16 11:57

Description

Code to reproduce:

IgniteCache<Integer, String[]> cache = ignite.getOrCreateCache(CACHE_NAME);
cache.put(1, new String[]{"hello", "world"});
String[] res = cache.get(1);

The bug is in CacheObjectContext.unwrapBinariesInArrayIfNeeded method, which always produces a new array.

We should check for basic types somehow and skip this conversion.

Generally, we NEVER want to change the type of the array, so the fix may be:

if (arr.getClass().getComponentType() != Object.class)
    return arr;

Issue Links

• blocks: IGNITE-1915 .NET: Ignite as Entity Framework Second-Level Cache
• links to: GitHub Pull Request #777