Dennis Gove created SOLR-12355:
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Summary: HashJoinStream's use of String::hashCode results in
non-matching tuples being considered matches
Key: SOLR-12355
URL: https://issues.apache.org/jira/browse/SOLR-12355
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Components: SolrJ
Affects Versions: 6.0
Reporter: Dennis Gove
Assignee: Dennis Gove
The following strings have been found to have hashCode conflicts and as such
can result in HashJoinStream considering two tuples with fields of these values
to be considered the same.
{code:java}
"MG!!00TNGP::Mtge::".hashCode() == "MG!!00TNH1::Mtge::".hashCode() {code}
This means these two tuples are the same if we're comparing on field "foo"
{code:java}
{
"foo":"MG!!00TNGP::Mtge::"
}
{
"foo":"MG!!00TNH1::Mtge::"
}
{code}
and these two tuples are the same if we're comparing on fields "foo,bar"
{code:java}
{
"foo":"MG!!00TNGP"
"bar":"Mtge"
}
{
"foo":"MG!!00TNH1"
"bar":"Mtge"
}{code}
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