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https://issues.apache.org/jira/browse/HDDS-10137?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17807541#comment-17807541
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Ivan Andika edited comment on HDDS-10137 at 1/17/24 4:18 AM:
-------------------------------------------------------------
Probably the SstFilteringService NPE in OMDBCheckpointServlet#lock does not
release the lock on KeyDeletingService, causing the subsequent lock call to
block indefinitely.
was (Author: JIRAUSER298977):
Probably the SstFilteringService NPE in OMDBCheckpointServlet#lock does not
release the lock on KeyDeletingService, causing the subsequent call to block
indefinitely.
> OM DB snapshot unable to be downloaded
> --------------------------------------
>
> Key: HDDS-10137
> URL: https://issues.apache.org/jira/browse/HDDS-10137
> Project: Apache Ozone
> Issue Type: Bug
> Components: OM, Ozone Recon
> Affects Versions: 1.4.0
> Reporter: Ivan Andika
> Priority: Blocker
>
> To test 1.4.0-rc1, I rebuild a new Ozone cluster to do some testing.
> After I initialized and started SCM and OM, I started Recon. However, Recon
> was not able to download the OM DB Snapshot
> At first there is a NPE encountered when downloading OM DB Snapshot
> Recon's log
> {code:java}
> 2024-01-17 10:56:29,324 [Recon-SyncOM-0] ERROR
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl:
> Unable to obtain Ozone Manager DB Snapshot.
> java.io.IOException: Server returned HTTP response code: 500 for URL:
> http://<redacted>/dbCheckpoint
> at
> sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1900)
> at
> sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498)
> at
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.lambda$getOzoneManagerDBSnapshot$1(OzoneManagerServiceProviderImpl.java:358)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1899)
> at
> org.apache.hadoop.security.SecurityUtil.doAsUser(SecurityUtil.java:551)
> at
> org.apache.hadoop.security.SecurityUtil.doAsLoginUser(SecurityUtil.java:531)
> at
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.getOzoneManagerDBSnapshot(OzoneManagerServiceProviderImpl.java:355)
> at
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.updateReconOmDBWithNewSnapshot(OzoneManagerServiceProviderImpl.java:387)
> at
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.syncDataFromOM(OzoneManagerServiceProviderImpl.java:539)
> at
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.lambda$startSyncDataFromOM$0(OzoneManagerServiceProviderImpl.java:267)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> 2024-01-17 10:56:29,325 [Recon-SyncOM-0] ERROR
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl: Null
> snapshot location got from OM.{code}
> OM leader's log (This seems to be because SstFilteringService might be null)
> {code:java}
> 2024-01-17 10:56:29,321 [qtp3981395-71] ERROR
> org.apache.hadoop.hdds.utils.DBCheckpointServlet: Unable to process metadata
> snapshot request.
> java.lang.NullPointerException
> at
> org.apache.hadoop.ozone.om.OMDBCheckpointServlet$Lock.lock(OMDBCheckpointServlet.java:667)
> at
> org.apache.hadoop.hdds.utils.DBCheckpointServlet.generateSnapshotCheckpoint(DBCheckpointServlet.java:197)
> at
> org.apache.hadoop.hdds.utils.DBCheckpointServlet.doGet(DBCheckpointServlet.java:303)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
> 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:1665)
> 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.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:338)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:315)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:173)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:137)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
> at java.lang.Thread.run(Thread.java:748) {code}
> Afterwards, Recon encountered "Read timed out" exception every time it tries
> to download the OM DB Snapshot
> Recon side
> {code:java}
> 2024-01-17 11:04:04,419 [Recon-SyncOM-0] ERROR
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl:
> Unable to obtain Ozone Manager DB Snapshot.
> java.net.SocketTimeoutException: Read timed out
> at java.net.SocketInputStream.socketRead0(Native Method)
> at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
> at java.net.SocketInputStream.read(SocketInputStream.java:171)
> at java.net.SocketInputStream.read(SocketInputStream.java:141)
> at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)
> at java.io.BufferedInputStream.read1(BufferedInputStream.java:286)
> at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
> at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:735)
> at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:678)
> at
> sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1593)
> at
> sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498)
> at
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.lambda$getOzoneManagerDBSnapshot$1(OzoneManagerServiceProviderImpl.java:358)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1899)
> at
> org.apache.hadoop.security.SecurityUtil.doAsUser(SecurityUtil.java:551)
> at
> org.apache.hadoop.security.SecurityUtil.doAsLoginUser(SecurityUtil.java:531)
> at
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.getOzoneManagerDBSnapshot(OzoneManagerServiceProviderImpl.java:355)
> at
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.updateReconOmDBWithNewSnapshot(OzoneManagerServiceProviderImpl.java:387)
> at
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.syncDataFromOM(OzoneManagerServiceProviderImpl.java:539)
> at
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.lambda$startSyncDataFromOM$0(OzoneManagerServiceProviderImpl.java:267)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
> 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) {code}
> On OM side
> {code:java}
> 2024-01-17 10:57:29,333 [qtp3981395-72] INFO
> org.apache.hadoop.hdds.utils.DBCheckpointServlet: Received GET request to
> obtain DB checkpoint snapshot
> 2024-01-17 10:58:36,098 [qtp3981395-73] INFO
> org.apache.hadoop.hdds.utils.DBCheckpointServlet: Received GET request to
> obtain DB checkpoint snapshot
> 2024-01-17 10:59:39,357 [qtp3981395-74] INFO
> org.apache.hadoop.hdds.utils.DBCheckpointServlet: Received GET request to
> obtain DB checkpoint snapshot
> 2024-01-17 11:00:44,365 [qtp3981395-75] INFO
> org.apache.hadoop.hdds.utils.DBCheckpointServlet: Received GET request to
> obtain DB checkpoint snapshot
> 2024-01-17 11:01:49,393 [qtp3981395-77] INFO
> org.apache.hadoop.hdds.utils.DBCheckpointServlet: Received GET request to
> obtain DB checkpoint snapshot
> 2024-01-17 11:02:54,405 [qtp3981395-78] INFO
> org.apache.hadoop.hdds.utils.DBCheckpointServlet: Received GET request to
> obtain DB checkpoint snapshot
> 2024-01-17 11:03:59,416 [qtp3981395-79] INFO
> org.apache.hadoop.hdds.utils.DBCheckpointServlet: Received GET request to
> obtain DB checkpoint snapshot
> 2024-01-17 11:05:04,428 [qtp3981395-80] INFO
> org.apache.hadoop.hdds.utils.DBCheckpointServlet: Received GET request to
> obtain DB checkpoint snapshot
> 2024-01-17 11:06:09,439 [qtp3981395-68] INFO
> org.apache.hadoop.hdds.utils.DBCheckpointServlet: Received GET request to
> obtain DB checkpoint snapshot
> 2024-01-17 11:07:14,450 [qtp3981395-245] INFO
> org.apache.hadoop.hdds.utils.DBCheckpointServlet: Received GET request to
> obtain DB checkpoint snapshot
> 2024-01-17 11:08:19,462 [qtp3981395-246] INFO
> org.apache.hadoop.hdds.utils.DBCheckpointServlet: Received GET request to
> obtain DB checkpoint snapshot
> 2024-01-17 11:09:24,468 [qtp3981395-225] INFO
> org.apache.hadoop.hdds.utils.DBCheckpointServlet: Received GET request to
> obtain DB checkpoint snapshot
> 2024-01-17 11:10:29,482 [qtp3981395-227] INFO
> org.apache.hadoop.hdds.utils.DBCheckpointServlet: Received GET request to
> obtain DB checkpoint snapshot
> 2024-01-17 11:11:34,495 [qtp3981395-232] INFO
> org.apache.hadoop.hdds.utils.DBCheckpointServlet: Received GET request to
> obtain DB checkpoint snapshot
> 2024-01-17 11:12:39,508 [qtp3981395-233] INFO
> org.apache.hadoop.hdds.utils.DBCheckpointServlet: Received GET request to
> obtain DB checkpoint snapshot{code}
> I will put this as blocker for now. Please let me know if I miss anything.
> cc: [~Symious] [~Sammi]
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