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https://issues.apache.org/jira/browse/LUCENE-10005?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17364636#comment-17364636
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Nhat Nguyen commented on LUCENE-10005:
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I think it should be an improvement in Solr instead of Lucene.
> Improve AlreadyClosedException logging
> --------------------------------------
>
> Key: LUCENE-10005
> URL: https://issues.apache.org/jira/browse/LUCENE-10005
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Andras Salamon
> Priority: Major
>
> If we close the IndexWriter because of a tragic exception and later try to
> write into the index we got AlreadyClosedException exception like this:
> {noformat}
> 2021-05-17 11:35:04,963 ERROR
> (qtp626742236-67894)----x:ct_returns_shard8_replica_n28-o.a.s.s.HttpSolrCall:
> null:org.apache.solr.common.SolrException: Error handling 'MERGEINDEXES'
> action
> at
> org.apache.solr.handler.admin.CoreAdminOperation.execute(CoreAdminOperation.java:365)
> ...
> Caused by: org.apache.lucene.store.AlreadyClosedException: this IndexWriter
> is closed
> at
> org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:671)
> at
> org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:685)
> ...
> Caused by: org.apache.hadoop.hdfs.BlockMissingException: Could not obtain
> block: BP-1877842388-10.181.61.226-1618590425462:blk_1075816117_2075498
> file=/solr/ct_returns/core_node31/data/index/_1z_Lucene50_0.doc
> at
> org.apache.hadoop.hdfs.DFSInputStream.refetchLocations(DFSInputStream.java:880)
> at
> org.apache.hadoop.hdfs.DFSInputStream.chooseDataNode(DFSInputStream.java:863)
> at {noformat}
> This is rather misleading because 2021-05-17 is the date of the
> AlreadyClosedException, but the tragic exception (BlockMissingException in
> this case) could be much earlier. This is the exception we saved when we had
> to close the indexwriter.
>
> We should emphasise that the tragic exception is not a fresh exception, but
> an exception we saved earlier.
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