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https://issues.apache.org/jira/browse/HDDS-12210?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17931545#comment-17931545
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Hemant Kumar edited comment on HDDS-12210 at 2/28/25 11:45 PM:
---------------------------------------------------------------
Based on the logs, one possible reason is that SnapshotDeletingService doesn't
wait for the response after submitting the merge/purge request. This means that
some transactions might be in Ratis logs waiting to get applied while Tarball
request acquires all the necessary locks. Another reason is that
SnapshotDeletingService doesn't use the same lock used by tarball creation.
was (Author: JIRAUSER297350):
Based on the logs, one possible reason is that SnapshotDeletingService doesn't
wait for the response after submitting the merge/purge request. This means that
some transactions might be in Ratis logs waiting to get applied while Tarball
request acquires all the necessary locks.
And because of that Snapshot Purge might be interfering with Tarball reqeust.
> Tarball creation failing with FileNotFoundException
> ---------------------------------------------------
>
> Key: HDDS-12210
> URL: https://issues.apache.org/jira/browse/HDDS-12210
> Project: Apache Ozone
> Issue Type: Sub-task
> Reporter: Hemant Kumar
> Assignee: Hemant Kumar
> Priority: Major
> Labels: pull-request-available
>
> Sometimes tarball creation is failing due to FileNotFoundException.
> {code:java}
> 2025-02-04 12:53:21,206 ERROR
> [qtp829035073-4790901]-org.apache.hadoop.hdds.utils.DBCheckpointServlet:
> Unable to process metadata snapshot request.
> java.io.FileNotFoundException:
> /data/meta01/hadoop-ozone/om/data/db.snapshots/checkpointState/om.db-705f7892-00ab-420e-b764-826913f13ff8/MANIFEST-685758
> (No such file or directory)
> at java.io.FileInputStream.open0(Native Method)
> at java.io.FileInputStream.open(FileInputStream.java:195)
> at java.io.FileInputStream.<init>(FileInputStream.java:138)
> at
> org.apache.hadoop.hdds.utils.HddsServerUtil.includeFile(HddsServerUtil.java:627)
> at
> org.apache.hadoop.ozone.om.OMDBCheckpointServlet.writeFilesToArchive(OMDBCheckpointServlet.java:596)
> at
> org.apache.hadoop.ozone.om.OMDBCheckpointServlet.writeDbDataToStream(OMDBCheckpointServlet.java:178)
> at
> org.apache.hadoop.hdds.utils.DBCheckpointServlet.generateSnapshotCheckpoint(DBCheckpointServlet.java:220)
> at
> org.apache.hadoop.hdds.utils.DBCheckpointServlet.doPost(DBCheckpointServlet.java:321)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
> at
> org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:799)
> at
> org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1656)
> at
> org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter.doFilter(StaticUserWebFilter.java:110)
> at
> org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
> at
> org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1626)
> at
> org.apache.hadoop.hdds.server.http.HttpServer2$QuotingInputFilter.doFilter(HttpServer2.java:1681)
> at
> org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
> at
> org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1626)
> at
> org.apache.hadoop.hdds.server.http.NoCacheFilter.doFilter(NoCacheFilter.java:48)
> at
> org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
> at
> org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1626)
> at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:552)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
> at
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:600)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235)
> at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1440)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
> at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:505)
> at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1355)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
> at
> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
> at org.eclipse.jetty.server.Server.handle(Server.java:516)
> at
> org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:487)
> at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:732)
> at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:479)
> at
> org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:277)
> at
> org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
> at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
> at
> org.eclipse.jetty.io.ssl.SslConnection$DecryptedEndPoint.onFillable(SslConnection.java:555)
> at
> org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:410)
> at
> org.eclipse.jetty.io.ssl.SslConnection$2.succeeded(SslConnection.java:164)
> at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
> at
> org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:338)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:315)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:173)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)
> at
> org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:409)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
> at java.lang.Thread.run(Thread.java:750)
> Suppressed: java.io.IOException: This archive contains unclosed
> entries.
> at
> org.apache.commons.compress.archivers.tar.TarArchiveOutputStream.finish(TarArchiveOutputStream.java:291)
> at
> org.apache.commons.compress.archivers.tar.TarArchiveOutputStream.close(TarArchiveOutputStream.java:309)
> at
> org.apache.hadoop.ozone.om.OMDBCheckpointServlet.writeDbDataToStream(OMDBCheckpointServlet.java:180)
> ... 51 more
> {code}
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