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https://issues.apache.org/jira/browse/HDDS-9541?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17782030#comment-17782030
]
Hongbing Wang commented on HDDS-9541:
-------------------------------------
{code:java}
// OMDBCheckpointServlet$Lock#lock
@Override
public BootstrapStateHandler.Lock lock()
throws InterruptedException {
// ...
// Then wait for the double buffer to be flushed.
om.getOmRatisServer().getOmStateMachine().awaitDoubleBufferFlush();
return this;
} {code}
RatisEnabled judgment may be required here
> NPE in OMDBCheckpointServlet with ozone.om.ratis.enable=false
> -------------------------------------------------------------
>
> Key: HDDS-9541
> URL: https://issues.apache.org/jira/browse/HDDS-9541
> Project: Apache Ozone
> Issue Type: Bug
> Components: OM HA
> Affects Versions: 1.4.0
> Reporter: Conway Zhang
> Priority: Blocker
>
> I am setting ozone.om.ratis.enable in ozone.xml as :
> {code:java}
> //ozone.xml
> <property>
> <name>ozone.om.ratis.enable</name>
> <value>false</value>
> </property> {code}
> When I using http://my.om.address:9874/dbCheckpoint
> there are some error in om.log:
> {code:java}
> //om.log
> 2023-10-25 20:13:35,233 [JvmPauseMonitor0] INFO
> org.apache.ratis.util.JvmPauseMonitor:
> JvmPauseMonitor-bf45f543-0a6a-4b80-b781-93fd81953556: Started
> 2023-10-25 20:16:58,832 [qtp1013364696-100] WARN
> org.apache.hadoop.hdds.server.ServerUtils: Storage directory for Ratis is not
> configured. It is a good idea to map this to an SSD disk. Falling back to
> ozone.metadata.dirs
> 2023-10-25 20:16:58,833 [qtp1013364696-100] WARN
> org.apache.hadoop.hdds.server.ServerUtils: ozone.om.db.dirs is not
> configured. We recommend adding this setting. Falling back to
> ozone.metadata.dirs instead.
> 2023-10-25 20:17:09,441 [qtp1013364696-226] INFO
> org.apache.hadoop.hdds.utils.DBCheckpointServlet: Received GET request to
> obtain DB checkpoint snapshot
> 2023-10-25 20:17:09,444 [qtp1013364696-226] ERROR
> org.apache.hadoop.hdds.utils.DBCheckpointServlet: Unable to process metadata
> snapshot request.
> java.lang.NullPointerException
> at
> org.apache.hadoop.ozone.om.OMDBCheckpointServlet$Lock.lock(OMDBCheckpointServlet.java:672)
> 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:1660)
> 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$1.run(ChannelEndPoint.java:104)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:338)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:315)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:173)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)
> at
> org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:409)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
> at java.lang.Thread.run(Thread.java:748)
> 2023-10-25 20:22:45,154 [qtp1013364696-232] INFO
> org.apache.hadoop.hdds.utils.DBCheckpointServlet: Received GET request to
> obtain DB checkpoint snapshot
> 2023-10-26 04:33:34,845 [JvmPauseMonitor0] WARN
> org.apache.ratis.util.JvmPauseMonitor:
> JvmPauseMonitor-bf45f543-0a6a-4b80-b781-93fd81953556: Detected pause in JVM
> or host machine approximately 0.241s without any GCs.
> 2023-10-26 07:53:12,498 [JvmPauseMonitor0] WARN
> org.apache.ratis.util.JvmPauseMonitor:
> JvmPauseMonitor-bf45f543-0a6a-4b80-b781-93fd81953556: Detected pause in JVM
> or host machine approximately 0.112s without any GCs.
> 2023-10-26 10:38:51,806 [qtp1013364696-234] INFO
> org.apache.hadoop.hdds.utils.DBCheckpointServlet: Received GET request to
> obtain DB checkpoint snapshot {code}
> And Recon has samer error:
> {code:java}
> 2023-10-25 19:33:00,064 [pool-27-thread-1] WARN
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl:
> Unable to get and apply delta updates from OM.
> java.lang.reflect.UndeclaredThrowableException
> at com.sun.proxy.$Proxy39.submitRequest(Unknown Source)
> at
> org.apache.hadoop.ozone.om.protocolPB.Hadoop3OmTransport.submitRequest(Hadoop3OmTransport.java:80)
> at
> org.apache.hadoop.ozone.om.protocolPB.OzoneManagerProtocolClientSideTranslatorPB.submitRequest(OzoneManagerProtocolClientSideTranslatorPB.java:326)
> at
> org.apache.hadoop.ozone.om.protocolPB.OzoneManagerProtocolClientSideTranslatorPB.getDBUpdates(OzoneManagerProtocolClientSideTranslatorPB.java:2142)
> at
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.innerGetAndApplyDeltaUpdatesFromOM(OzoneManagerServiceProviderImpl.java:457)
> at
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.getAndApplyDeltaUpdatesFromOM(OzoneManagerServiceProviderImpl.java:422)
> at
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.syncDataFromOM(OzoneManagerServiceProviderImpl.java:522)
> at
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.lambda$startSyncDataFromOM$0(OzoneManagerServiceProviderImpl.java:265)
> at
> java.util.concurrent.Executors$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$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> Caused by: java.io.InterruptedIOException: Retry interrupted
> at
> org.apache.hadoop.io.retry.RetryInvocationHandler$Call.processWaitTimeAndRetryInfo(RetryInvocationHandler.java:137)
> at
> org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeOnce(RetryInvocationHandler.java:108)
> at
> org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:362)
> ... 15 more
> Caused by: java.lang.InterruptedException: sleep interrupted
> at java.lang.Thread.sleep(Native Method)
> at
> org.apache.hadoop.io.retry.RetryInvocationHandler$Call.processWaitTimeAndRetryInfo(RetryInvocationHandler.java:131)
> ... 17 more
> 2023-10-25 19:33:00,064 [pool-27-thread-1] INFO
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl:
> Obtaining full snapshot from Ozone Manager
> 2023-10-25 19:33:00,065 [pool-27-thread-1] ERROR
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl:
> Unable to obtain Ozone Manager DB Snapshot.
> java.net.ConnectException: Connection refused (Connection refused)
> at java.net.PlainSocketImpl.socketConnect(Native Method)
> at
> java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
> at
> java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:204)
> at
> java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
> at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
> at java.net.Socket.connect(Socket.java:589)
> at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
> at sun.net.www.http.HttpClient.openServer(HttpClient.java:463)
> at sun.net.www.http.HttpClient.openServer(HttpClient.java:558)
> at sun.net.www.http.HttpClient.<init>(HttpClient.java:242)
> at sun.net.www.http.HttpClient.New(HttpClient.java:339)
> at sun.net.www.http.HttpClient.New(HttpClient.java:357)
> at
> sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1220)
> at
> sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1156)
> at
> sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1050)
> at
> sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:984)
> at
> org.apache.hadoop.ozone.recon.ReconUtils.makeHttpCall(ReconUtils.java:227)
> at
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.lambda$getOzoneManagerDBSnapshot$1(OzoneManagerServiceProviderImpl.java:354)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1953)
> at
> org.apache.hadoop.security.SecurityUtil.doAsUser(SecurityUtil.java:551)
> at
> org.apache.hadoop.security.SecurityUtil.doAsLoginUser(SecurityUtil.java:531)
> at
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.getOzoneManagerDBSnapshot(OzoneManagerServiceProviderImpl.java:353)
> at
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.updateReconOmDBWithNewSnapshot(OzoneManagerServiceProviderImpl.java:385)
> at
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.syncDataFromOM(OzoneManagerServiceProviderImpl.java:547)
> at
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.lambda$startSyncDataFromOM$0(OzoneManagerServiceProviderImpl.java:265)
> at
> java.util.concurrent.Executors$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)
> 2023-10-25 19:33:00,065 [pool-27-thread-1] ERROR
> org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl: Null
> snapshot location got from OM.
> 2023-10-25 19:33:00,199 [JvmPauseMonitor0] INFO
> org.apache.ratis.util.JvmPauseMonitor: JvmPauseMonitor-Recon: Stopped{code}
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