[
https://issues.apache.org/jira/browse/HDFS-16507?focusedWorklogId=748806&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-748806
]
ASF GitHub Bot logged work on HDFS-16507:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 28/Mar/22 17:37
Start Date: 28/Mar/22 17:37
Worklog Time Spent: 10m
Work Description: hadoop-yetus commented on pull request #4082:
URL: https://github.com/apache/hadoop/pull/4082#issuecomment-1080951327
:broken_heart: **-1 overall**
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| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.41 ServerAPI=1.41 base:
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|
| GITHUB PR | https://github.com/apache/hadoop/pull/4082 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
mvnsite unit shadedclient spotbugs checkstyle codespell |
| uname | Linux e5e757bf0d2a 4.15.0-156-generic #163-Ubuntu SMP Thu Aug 19
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| Build tool | maven |
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| git revision | trunk / e24a4291079f1bac54cc47e4835c5ebd598ae636 |
| Default Java | Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
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| Test Results |
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| modules | C: hadoop-hdfs-project/hadoop-hdfs U:
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Issue Time Tracking
-------------------
Worklog Id: (was: 748806)
Time Spent: 3h 50m (was: 3h 40m)
> [SBN read] Avoid purging edit log which is in progress
> ------------------------------------------------------
>
> Key: HDFS-16507
> URL: https://issues.apache.org/jira/browse/HDFS-16507
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 3.1.0
> Reporter: tomscut
> Assignee: tomscut
> Priority: Critical
> Labels: pull-request-available
> Time Spent: 3h 50m
> Remaining Estimate: 0h
>
> We introduced [Standby Read] feature in branch-3.1.0, but found a FATAL
> exception. It looks like it's purging edit logs which is in process.
> According to the analysis, I suspect that the editlog which is in progress to
> be purged(after SNN checkpoint) does not finalize(See HDFS-14317) before ANN
> rolls edit its self.
> The stack:
> {code:java}
> java.lang.Thread.getStackTrace(Thread.java:1552)
> org.apache.hadoop.util.StringUtils.getStackTrace(StringUtils.java:1032)
>
> org.apache.hadoop.hdfs.server.namenode.FileJournalManager.purgeLogsOlderThan(FileJournalManager.java:185)
>
> org.apache.hadoop.hdfs.server.namenode.JournalSet$5.apply(JournalSet.java:623)
>
> org.apache.hadoop.hdfs.server.namenode.JournalSet.mapJournalsAndReportErrors(JournalSet.java:388)
>
> org.apache.hadoop.hdfs.server.namenode.JournalSet.purgeLogsOlderThan(JournalSet.java:620)
>
> org.apache.hadoop.hdfs.server.namenode.FSEditLog.purgeLogsOlderThan(FSEditLog.java:1512)
> org.apache.hadoop.hdfs.server.namenode.NNStorageRetentionManager.purgeOldStorage(NNStorageRetentionManager.java:177)
>
> org.apache.hadoop.hdfs.server.namenode.FSImage.purgeOldStorage(FSImage.java:1249)
>
> org.apache.hadoop.hdfs.server.namenode.ImageServlet$2.run(ImageServlet.java:617)
>
> org.apache.hadoop.hdfs.server.namenode.ImageServlet$2.run(ImageServlet.java:516)
> java.security.AccessController.doPrivileged(Native Method)
> javax.security.auth.Subject.doAs(Subject.java:422)
>
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730)
>
> org.apache.hadoop.hdfs.server.namenode.ImageServlet.doPut(ImageServlet.java:515)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
> org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:848)
>
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1772)
>
> org.apache.hadoop.http.HttpServer2$QuotingInputFilter.doFilter(HttpServer2.java:1604)
>
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1759)
> org.apache.hadoop.http.NoCacheFilter.doFilter(NoCacheFilter.java:45)
>
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1759)
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:582)
>
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
>
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
>
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)
>
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180)
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:512)
>
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
>
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112)
>
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
>
> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:119)
>
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)
> org.eclipse.jetty.server.Server.handle(Server.java:539)
> org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:333)
>
> org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251)
>
> org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:283)
> org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:108)
>
> org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93)
>
> org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303)
>
> org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)
>
> org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)
>
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)
>
> org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)
> java.lang.Thread.run(Thread.java:745) {code}
>
> I post some key logs for your reference:
> 1. ANN. Create editlog,
> {color:#ff0000}edits_InProgress_0000000000024207987{color}.
> {code:java}
> 2022-03-15 17:24:52,558 INFO namenode.FSEditLog
> (FSEditLog.java:startLogSegment(1394)) - Starting log segment at 24207987
> 2022-03-15 17:24:52,609 INFO namenode.FSEditLog
> (FSEditLog.java:startLogSegment(1423)) - Ending log segment at 24207987
> 2022-03-15 17:24:52,610 INFO namenode.FSEditLog
> (FSEditLog.java:startLogSegmentAndWriteHeaderTxn(1432)) - logEdit at 24207987
> 2022-03-15 17:24:52,624 INFO namenode.FSEditLog
> (FSEditLog.java:startLogSegmentAndWriteHeaderTxn(1434)) - logSync at 24207987
> {code}
> 2. SNN. Checkpoint.
> The oldest image file is: fsimage_00000000000{color:#de350b}25892513{color}.
> {color:#ff0000}25892513 + 1 - 1000000 = 24892514{color}
> {color:#ff0000}dfs.namenode.num.extra.edits.retained=1000000{color}
> {color:#172b4d}Code: {color}NNStorageRetentionManager#purgeOldStorage
> {code:java}
> void purgeOldStorage(NameNodeFile nnf) throws IOException {
> FSImageTransactionalStorageInspector inspector =
> new FSImageTransactionalStorageInspector(EnumSet.of(nnf));
> storage.inspectStorageDirs(inspector);
> long minImageTxId = getImageTxIdToRetain(inspector);
> purgeCheckpointsOlderThan(inspector, minImageTxId);
>
> {code}
> {color:#910091}...{color}
> {code:java}
> long minimumRequiredTxId = minImageTxId + 1;
> long purgeLogsFrom = Math.max(0, minimumRequiredTxId -
> numExtraEditsToRetain);
>
> ArrayList<EditLogInputStream> editLogs = new
> ArrayList<EditLogInputStream>();
> purgeableLogs.selectInputStreams(editLogs, purgeLogsFrom, false, false);
> Collections.sort(editLogs, new Comparator<EditLogInputStream>() {
> @Override
> public int compare(EditLogInputStream a, EditLogInputStream b) {
> return ComparisonChain.start()
> .compare(a.getFirstTxId(), b.getFirstTxId())
> .compare(a.getLastTxId(), b.getLastTxId())
> .result();
> }
> });
> // Remove from consideration any edit logs that are in fact required.
> while (editLogs.size() > 0 &&
> editLogs.get(editLogs.size() - 1).getFirstTxId() >=
> minimumRequiredTxId) {
> editLogs.remove(editLogs.size() - 1);
> }
>
> // Next, adjust the number of transactions to retain if doing so would mean
> // keeping too many segments around.
> while (editLogs.size() > maxExtraEditsSegmentsToRetain) {
> purgeLogsFrom = editLogs.get(0).getLastTxId() + 1;
> editLogs.remove(0);
> }
> ...
> purgeableLogs.purgeLogsOlderThan(purgeLogsFrom);
> }{code}
>
> {code:java}
> 2022-03-15 17:28:02,640 INFO ha.StandbyCheckpointer
> (StandbyCheckpointer.java:doWork(443)) - Triggering checkpoint because there
> have been 1189661 txns since the last checkpoint, which exceeds the
> configured threshold 20000
> 2022-03-15 17:28:02,648 INFO namenode.FSImage
> (FSEditLogLoader.java:loadFSEdits(188)) - Edits file
> ByteStringEditLog[27082175, 27082606], ByteStringEditLog[27082175, 27082606],
> ByteStringEditLog[27082175, 27082606] of size 60008 edits # 432 loaded in 0
> seconds
> 2022-03-15 17:28:02,649 INFO namenode.FSImage
> (FSImage.java:saveNamespace(1121)) - Save namespace ...
> 2022-03-15 17:28:02,650 INFO namenode.FSImageFormatProtobuf
> (FSImageFormatProtobuf.java:save(718)) - Saving image file
> /data/hadoop/hdfs/namenode/current/fsimage.ckpt_0000000000027082606 using no
> compression
> 2022-03-15 17:28:03,180 INFO namenode.FSImageFormatProtobuf
> (FSImageFormatProtobuf.java:save(722)) - Image file
> /data/hadoop/hdfs/namenode/current/fsimage.ckpt_0000000000027082606 of size
> 17885002 bytes saved in 0 seconds .
> 2022-03-15 17:28:03,183 INFO namenode.NNStorageRetentionManager
> (NNStorageRetentionManager.java:getImageTxIdToRetain(211)) - Going to retain
> 2 images with txid >= 25892513
> 2022-03-15 17:28:03,183 INFO namenode.NNStorageRetentionManager
> (NNStorageRetentionManager.java:purgeImage(233)) - Purging old image
> FSImageFile(file=/data/hadoop/hdfs/namenode/current/fsimage_0000000000024794305,
> cpktTxId=0000000000024794305)
> 2022-03-15 17:28:03,188 INFO namenode.NNStorageRetentionManager
> (NNStorageRetentionManager.java:purgeOldStorage(169)) - purgeLogsFrom:
> 24892514
> 2022-03-15 17:28:03,282 INFO namenode.TransferFsImage
> (TransferFsImage.java:copyFileToStream(396)) - Sending fileName:
> /data/hadoop/hdfs/namenode/current/fsimage_0000000000027082606, fileSize:
> 17885002. Sent total: 17885002 bytes. Size of last segment intended to send:
> -1 bytes.
> 2022-03-15 17:28:03,536 INFO namenode.TransferFsImage
> (TransferFsImage.java:uploadImageFromStorage(240)) - Uploaded image with txid
> 27082606 to namenode at http://sg-test-ambari-nn1.bigdata.bigo.inner:50070 in
> 0.343 seconds
> 2022-03-15 17:28:03,640 INFO namenode.TransferFsImage
> (TransferFsImage.java:copyFileToStream(396)) - Sending fileName:
> /data/hadoop/hdfs/namenode/current/fsimage_0000000000027082606, fileSize:
> 17885002. Sent total: 17885002 bytes. Size of last segment intended to send:
> -1 bytes.
> 2022-03-15 17:28:03,684 INFO namenode.TransferFsImage
> (TransferFsImage.java:uploadImageFromStorage(240)) - Uploaded image with txid
> 27082606 to namenode at http://sg-test-ambari-dn1.bigdata.bigo.inner:50070 in
> 0.148 seconds
> 2022-03-15 17:28:03,748 INFO namenode.TransferFsImage
> (TransferFsImage.java:copyFileToStream(396)) - Sending fileName:
> /data/hadoop/hdfs/namenode/current/fsimage_0000000000027082606, fileSize:
> 17885002. Sent total: 17885002 bytes. Size of last segment intended to send:
> -1 bytes.
> 2022-03-15 17:28:03,798 INFO namenode.TransferFsImage
> (TransferFsImage.java:uploadImageFromStorage(240)) - Uploaded image with txid
> 27082606 to namenode at http://sg-test-ambari-dn2.bigdata.bigo.inner:50070 in
> 0.113 seconds
> 2022-03-15 17:28:03,798 INFO ha.StandbyCheckpointer
> (StandbyCheckpointer.java:doWork(482)) - Checkpoint finished successfully.
> {code}
> 3. ANN. Purge edit logs.
> The oldest image file is: fsimage_00000000000{color:#de350b}25892513{color}.
> {color:#ff0000}25892513 + 1 - 1000000 = 24892514{color}
> {color:#ff0000}dfs.namenode.num.extra.edits.retained=1000000{color}
> {code:java}
> 2022-03-15 17:28:03,515 INFO namenode.NNStorageRetentionManager
> (NNStorageRetentionManager.java:getImageTxIdToRetain(211)) - Going to retain
> 2 images with txid >= 25892513 {code}
> {code:java}
> 2022-03-15 17:28:03,523 INFO namenode.NNStorageRetentionManager
> (NNStorageRetentionManager.java:purgeOldStorage(169)) - purgeLogsFrom:
> 24892514 2022-03-15 17:28:03,523 INFO client.QuorumJournalManager
> (QuorumJournalManager.java:purgeLogsOlderThan(458)) - Purging remote journals
> older than txid 24892514 2022-03-15 17:28:03,524 INFO
> namenode.FileJournalManager (FileJournalManager.java:purgeLogsOlderThan(184))
> - Purging logs older than 24892514
> {code}
> *4. ANN. Purge {color:#ff0000}edits_inprogress_0000000000024207987{color}.*
> {code:java}
> 2022-03-15 17:28:03,525 INFO namenode.NNStorageRetentionManager
> (NNStorageRetentionManager.java:purgeLog(227)) - Purging old edit log
> EditLogFile(file=/data/hadoop/hdfs/namenode/current/edits_inprogress_0000000000024207987,first=0000000000024207987,last=-000000000000012345,inProgress=true,hasCorruptHeader=false)
> {code}
> 5. JN. Purge edit logs include {color:#ff0000}24207987{color}.
> {color:#ff0000}No log file to finalize at transaction ID 24207987{color}
> {code:java}
> 2022-03-15 17:28:03,530 INFO common.Storage
> (JNStorage.java:purgeMatching(196)) - Purging no-longer needed file 24207986
> 2022-03-15 17:28:03,564 INFO common.Storage
> (JNStorage.java:purgeMatching(196)) - Purging no-longer needed file 24207987
> 2022-03-15 17:28:03,571 INFO common.Storage
> (JNStorage.java:purgeMatching(196)) - Purging no-longer needed file 24207981
> 2022-03-15 17:28:03,572 INFO common.Storage
> (JNStorage.java:purgeMatching(196)) - Purging no-longer needed file 24207984
> 2022-03-15 17:28:03,576 INFO common.Storage
> (JNStorage.java:purgeMatching(196)) - Purging no-longer needed file 24207982
> org.apache.hadoop.hdfs.qjournal.protocol.JournalOutOfSyncException: No log
> file to finalize at transaction ID 24207987 ; journal id: ambari-test
> {code}
> 6. ANN. Process exits because of the fatal exception from JNs.
> {code:java}
> 2022-03-15 17:28:52,709 INFO namenode.FSNamesystem
> (FSNamesystem.java:run(4232)) - NameNode rolling its own edit log because
> number of edits in open segment exceeds threshold of 100000
> 2022-03-15 17:28:52,709 INFO namenode.FSEditLog
> (FSEditLog.java:rollEditLog(1346)) - Rolling edit logs
> 2022-03-15 17:28:52,709 INFO namenode.FSEditLog
> (FSEditLog.java:endCurrentLogSegment(1442)) - Ending log segment 24207987,
> 27990691
> 2022-03-15 17:28:52,748 INFO namenode.FSEditLog
> (FSEditLog.java:printStatistics(806)) - Number of transactions: 3782706 Total
> time for transactions(ms): 25003 Number of transactions batched in Syncs:
> 3774095 Number of syncs: 8611 SyncTimes(ms): 11347 151932
> 2022-03-15 17:28:52,867 FATAL namenode.FSEditLog
> (JournalSet.java:mapJournalsAndReportErrors(393)) - Error: finalize log
> segment 24207987, 27990692 failed for required journal
> (JournalAndStream(mgr=QJM
> to [xxx:8485, xxx:8485, xxx:8485, xxx:8485, xxx:8485], stream=null))
> org.apache.hadoop.hdfs.qjournal.client.QuorumException: Got too many
> exceptions to achieve quorum size 3/5. 5 exceptions thrown:
> 10.152.124.157:8485: No log file to finalize at transaction ID 24207987 ;
> journal id: ambari-test
> at
> org.apache.hadoop.hdfs.qjournal.server.Journal.finalizeLogSegment(Journal.java:656)
> at
> org.apache.hadoop.hdfs.qjournal.server.JournalNodeRpcServer.finalizeLogSegment(JournalNodeRpcServer.java:210)
> at
> org.apache.hadoop.hdfs.qjournal.protocolPB.QJournalProtocolServerSideTranslatorPB.finalizeLogSegment(QJournalProtocolServerSideTranslatorPB.java:205)
> at
> org.apache.hadoop.hdfs.qjournal.protocol.QJournalProtocolProtos$QJournalProtocolService$2.callBlockingMethod(QJournalProtocolProtos.java:28890)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:550)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1094)
> at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1066)
> at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1000)
> 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:1730)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2989) {code}
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