[jira] [Created] (IGNITE-29199) Local IndexQuery returns binary objects on a cache that is not in keep-binary mode

["Reza Taroosheh (Jira)" <ji...@apache.org>]

Reza Taroosheh created IGNITE-29199:
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             Summary: Local IndexQuery returns binary objects on a cache that is not in keep-binary mode
                 Key: IGNITE-29199
                 URL: https://issues.apache.org/jira/browse/IGNITE-29199
             Project: Ignite
          Issue Type: Bug
            Reporter: Reza Taroosheh
            Assignee: Reza Taroosheh
             Fix For: 2.19


A local {{IndexQuery}} ({{setLocal(true)}}) returns keys and values as {{BinaryObject}} on a cache that is not in keep-binary mode. Reading an entry as the cache's own type throws {{ClassCastException}}. The same query without {{setLocal}}, and a local {{ScanQuery}} on the same cache, return the cache's own classes.

Steps:
# Create a cache {{IgniteCache<ItemKey, Item>}} with a sorted index on an {{Item}} field, without {{withKeepBinary()}}.
# Put some entries.
# Run {{cache.query(new IndexQuery<ItemKey, Item>(Item.class, IDX).setLocal(true)).getAll()}} and read {{getValue()}} as {{Item}}.

Actual: keys and values are {{BinaryObjectImpl}}, and reading the value as {{Item}} throws {{ClassCastException}}.
Expected: {{ItemKey}} and {{Item}}, as with the distributed {{IndexQuery}}.

Reproduced on 2.17.0 and 2.18.0 (reported on the dev list), and on master in {{IndexQueryLimitTest}} with {{setLocal(true)}}.

Cause: {{IndexQueryProcessor#queryLocal}} unwraps each row with {{keepBinary = true}}. The caller's {{keepBinary}} is used only for the objects passed to the filter. The distributed path deserializes rows in the query future ({{GridCacheQueryFutureAdapter}}), while the local path skips this step.

Compatibility: fixing this changes the type a local {{IndexQuery}} returns on a cache that is not in keep-binary mode. Code that relies on getting {{BinaryObject}} from it would need to use {{withKeepBinary()}}, which is the documented way to get binary objects.



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