[jira] [Created] (LUCENE-10005) Improve AlreadyClosedException logging

["Andras Salamon (Jira)" <ji...@apache.org>]

Andras Salamon created LUCENE-10005:
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             Summary: Improve AlreadyClosedException logging
                 Key: LUCENE-10005
                 URL: https://issues.apache.org/jira/browse/LUCENE-10005
             Project: Lucene - Core
          Issue Type: Improvement
            Reporter: Andras Salamon


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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