Chris M. Hostetter created SOLR-15290:
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Summary: Better Docs/Tests/Warnings/Defaults for
SignatureUpdateProcessorFactory in SolrCloud
Key: SOLR-15290
URL: https://issues.apache.org/jira/browse/SOLR-15290
Project: Solr
Issue Type: Task
Security Level: Public (Default Security Level. Issues are Public)
Reporter: Chris M. Hostetter
I was recently helping someone who had very weird symptoms of replicas getting
out of sync, that turned out to be because of using
SignatureUpdateProcessorFactory to "de-duplicate" documents that had different
unique keys, but identical computed "signatures".
Although they had customized the {{fields}} configuration of
SignatureUpdateProcessorFactory, most of the (bad) behavior came from the
defaults:
{code:java}
overwriteDupes = params.getBool("overwriteDupes", true);
signatureField = params.get("signatureField", "signatureField");
{code}
...in spite of the fact that this combination does not – and has never – worked
with SolrCloud: SOLR-3473
I'm opening this issue to serve as a Parent for a few Sub-Tasks. Some of which
I hope to takle imminently, and some of which are just ideas for the future.
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