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7        <str>Solr adds block join support</str>
8      </arr>
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11        <arr name="comment_t">
12          <str>SolrCloud supports it too!</str>
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14      </doc>
15    </doc>
16    <doc>
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19        <str name="id">CHILD_2_1</str>
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21          <str>Cool features</str>
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26        <arr name="comment_t">
27          <str>Cool features</str>
28        </arr>
29      </doc>
30    </doc>
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33      <doc>
34        <str name="id">CHILD_3_1</str>
35        <arr name="comment_t">
36          <str>Cool features</str>
37        </arr>
38      </doc>
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