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https://issues.apache.org/jira/browse/SOLR-7378?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kevin Risden updated SOLR-7378:
-------------------------------
Component/s: hdfs
Hadoop Integration
> Be more conservative about loading a core when hdfs transaction log could not
> be recovered
> ------------------------------------------------------------------------------------------
>
> Key: SOLR-7378
> URL: https://issues.apache.org/jira/browse/SOLR-7378
> Project: Solr
> Issue Type: Bug
> Components: Hadoop Integration, hdfs, SolrCloud
> Affects Versions: 5.0
> Reporter: Gregory Chanan
> Priority: Major
>
> Today, if an HdfsTransactionLog cannot recover its lease, you get the
> following warning in the log:
> {code}
> log.warn("Cannot recoverLease after trying for " +
> conf.getInt("solr.hdfs.lease.recovery.timeout", 900000) +
> "ms (solr.hdfs.lease.recovery.timeout); continuing, but may be
> DATALOSS!!!; " +
> getLogMessageDetail(nbAttempt, p, startWaiting));
> {code}
> from:
> https://github.com/apache/lucene-solr/blob/a8c24b7f02d4e4c172926d04654bcc007f6c29d2/solr/core/src/java/org/apache/solr/util/FSHDFSUtils.java#L145-L148
> But some deployments may not actually want to continue if there is potential
> data loss, they may want to investigate what the underlying issue is with
> HDFS first. And there's no way outside of looking at the logs to figure out
> what is going on.
> There's a range of possibilties here, but here's a couple of ideas:
> 1) config parameter around whether to continue with potential data loss or not
> 2) load but require special flag to read potentially incorrect data (similar
> to shards.tolerant, data.tolerant or something?)
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