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https://issues.apache.org/jira/browse/IGNITE-14369?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bojidar Marinov updated IGNITE-14369:
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Labels: node (was: )
> Node.js: incorrect Hash Code calculcation
> -----------------------------------------
>
> Key: IGNITE-14369
> URL: https://issues.apache.org/jira/browse/IGNITE-14369
> Project: Ignite
> Issue Type: Bug
> Components: thin client
> Affects Versions: 2.10
> Reporter: Bojidar Marinov
> Priority: Major
> Labels: node
>
> The Node.js thin client calculates wrong hashcodes, possibly leading to
> duplicated rows and inability to read rows with complex key types written
> from other languages:
> # BinaryUtils.contentHashCode is called with wrong end parameter at
> [BinaryObject.ts:397|https://github.com/apache/ignite-nodejs-thin-client/blob/76c7d7eb2b1856295f877434ef358beaa7155d91/src/BinaryObject.ts#L397].
> The second parameter is the end position, not the content length, and thus
> should be relative to this._startOffset.
> Experimentally confirmed that changing to this._startOffset +
> this._schemaOffset - 1 works.
> # BinaryUtils.contentHashCode uses unsigned bytes at
> [BinaryUtils.ts:632|https://github.com/apache/ignite-nodejs-thin-client/blob/76c7d7eb2b1856295f877434ef358beaa7155d91/src/internal/BinaryUtils.ts#L632].
> [buffer[idx]|https://nodejs.org/api/buffer.html#buffer_buf_index] returns a
> number between 0..255, while Java's byte is -128..127.
> Experimentally confirmed that switching to
> [Buffer.readInt8|https://nodejs.org/api/buffer.html#buffer_buf_readint8_offset]
> works.
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