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https://issues.apache.org/jira/browse/NIFI-9572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17492073#comment-17492073
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Joe Witt commented on NIFI-9572:
--------------------------------
Actually yeah you're ulimit data shows you intent to allow as many as 50,000
open files at once. Yet the lsof runs you've done with 'wc -l' show less than
10,000. So either you dont have the right limit for the user nifi actually
runs as OR you are somehow growing file handles and then hitting 50,000. In
either case the raw lsof output will help us see what is in the list for the
20,30,40thousand entries. Also if this is slowing happening over time are
you monitoring file handle growth happening over time? How long from restart
to out of file handles? Lets see lsof output/counts every 30 minutes
> Failed to index Provenance Events and (Too many Files)
> ------------------------------------------------------
>
> Key: NIFI-9572
> URL: https://issues.apache.org/jira/browse/NIFI-9572
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core UI
> Affects Versions: 1.15.2
> Reporter: mayki
> Priority: Major
>
> Hello
> I have upgraded NIFI 1.15.2 since 2022/01/05
> No issue until this night 2022/01/13
> * nifi version 1.15.2
> * jdk-1.8.0_311
> And the limit is high
> {code:java}
> Last login: Fri Jan 14 09:57:06 CET 2022 on pts/2
> -bash-4.2@nifi$ ulimit -a
> core file size (blocks, -c) 0
> data seg size (kbytes, -d) unlimited
> scheduling priority (-e) 0
> file size (blocks, -f) rg
> pending signals (-i) 63278
> max locked memory (kbytes, -l) 64
> max memory size (kbytes, -m) unlimited
> open files (-n) 50000
> pipe size (512 bytes, -p) 8
> POSIX message queues (bytes, -q) 819200
> real-time priority (-r) 0
> stack size (kbytes, -s) 8192
> cpu time (seconds, -t) unlimited
> max user processes (-u) 10000
> virtual memory (kbytes, -v) unlimited
> file locks (-x) unlimited
> {code}
>
> We got a lot error about provenance_repository, it fill our filesystem logs ..
>
> {code:java}
> 2022-01-14 10:19:00,963 ERROR [Index Provenance Events-2]
> o.a.n.p.index.lucene.EventIndexTask Failed to index Provenance Events
> org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
> at
> org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:877)
> at
> org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:891)
> at
> org.apache.lucene.index.IndexWriter.updateDocuments(IndexWriter.java:1468)
> at
> org.apache.lucene.index.IndexWriter.addDocuments(IndexWriter.java:1444)
> at
> org.apache.nifi.provenance.lucene.LuceneEventIndexWriter.index(LuceneEventIndexWriter.java:70)
> at
> org.apache.nifi.provenance.index.lucene.EventIndexTask.index(EventIndexTask.java:202)
> at
> org.apache.nifi.provenance.index.lucene.EventIndexTask.run(EventIndexTask.java:113)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> Caused by: java.nio.file.FileSystemException:
> /data/nifi/provenance_repository/lucene-8-index-1642145908399/_4_Lucene80_0.dvd:
> Too many open files
> {code}
>
>
> We expect upgrade all nifi instances to 1.15.2 to avoid log4j vulnerability.
> But it is impossible to do that if we got this error.
>
> Thanks for you help.
>
> Regards
>
>
>
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