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https://issues.apache.org/jira/browse/HBASE-21219?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16626634#comment-16626634
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Ted Yu commented on HBASE-21219:
--------------------------------
{code}
307 LOG.warn("Known hosts (from newestTimestamps):");
308 for (String s: newestTimestamps.keySet()) {
309 LOG.warn(s);
{code}
The above seems to be for debug purpose. Use LOG.debug ?
> Hbase incremental backup fails with null pointer exception
> ----------------------------------------------------------
>
> Key: HBASE-21219
> URL: https://issues.apache.org/jira/browse/HBASE-21219
> Project: HBase
> Issue Type: Bug
> Components: backup&restore
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
> Priority: Major
> Fix For: 3.0.0
>
> Attachments: HBASE-21219-v1.patch
>
>
> hbase backup create incremental hdfs:///bkpHbase_Test/bkpHbase_Test2 -t
> bkpHbase_Test2
> 2018-09-21 15:35:31,421 INFO [main] impl.TableBackupClient: Backup
> backup_1537524313995 started at 1537524331419. 2018-09-21 15:35:31,454 INFO
> [main] impl.IncrementalBackupManager: Execute roll log procedure for
> incremental backup ... 2018-09-21 15:35:32,985 ERROR [main]
> impl.TableBackupClient: Unexpected Exception : java.lang.NullPointerException
> java.lang.NullPointerException at
> org.apache.hadoop.hbase.backup.impl.IncrementalBackupManager.getLogFilesForNewBackup(IncrementalBackupManager.java:309)
> at
> org.apache.hadoop.hbase.backup.impl.IncrementalBackupManager.getIncrBackupLogFileMap(IncrementalBackupManager.java:103)
> at
> org.apache.hadoop.hbase.backup.impl.IncrementalTableBackupClient.execute(IncrementalTableBackupClient.java:276)
> at
> org.apache.hadoop.hbase.backup.impl.BackupAdminImpl.backupTables(BackupAdminImpl.java:601)
> at
> org.apache.hadoop.hbase.backup.impl.BackupCommands$CreateCommand.execute(BackupCommands.java:347)
> at
> org.apache.hadoop.hbase.backup.BackupDriver.parseAndRun(BackupDriver.java:138)
> at org.apache.hadoop.hbase.backup.BackupDriver.doWork(BackupDriver.java:171)
> at org.apache.hadoop.hbase.backup.BackupDriver.run(BackupDriver.java:204) at
> org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76) at
> org.apache.hadoop.hbase.backup.BackupDriver.main(BackupDriver.java:179)
> 2018-09-21 15:35:32,989 ERROR [main] impl.TableBackupClient:
> BackupId=backup_1537524313995,startts=1537524331419,failedts=1537524332989,failedphase=PREPARE_INCREMENTAL,failedmessage=null
> 2018-09-21 15:35:57,167 ERROR [main] impl.TableBackupClient: Backup
> backup_1537524313995 failed.
> Backup session finished. Status: FAILURE 2018-09-21 15:35:57,175 ERROR [main]
> backup.BackupDriver: Error running
> command-line tool java.io.IOException: java.lang.NullPointerException at
> org.apache.hadoop.hbase.backup.impl.IncrementalTableBackupClient.execute(IncrementalTableBackupClient.java:281)
> at
> org.apache.hadoop.hbase.backup.impl.BackupAdminImpl.backupTables(BackupAdminImpl.java:601)
> at
> org.apache.hadoop.hbase.backup.impl.BackupCommands$CreateCommand.execute(BackupCommands.java:347)
> at
> org.apache.hadoop.hbase.backup.BackupDriver.parseAndRun(BackupDriver.java:138)
> at org.apache.hadoop.hbase.backup.BackupDriver.doWork(BackupDriver.java:171)
> at org.apache.hadoop.hbase.backup.BackupDriver.run(BackupDriver.java:204) at
> org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76) at
> org.apache.hadoop.hbase.backup.BackupDriver.main(BackupDriver.java:179)
> Caused by: java.lang.NullPointerException at
> org.apache.hadoop.hbase.backup.impl.IncrementalBackupManager.getLogFilesForNewBackup(IncrementalBackupManager.java:309)
> at
> org.apache.hadoop.hbase.backup.impl.IncrementalBackupManager.getIncrBackupLogFileMap(IncrementalBackupManager.java:103)
> at
> org.apache.hadoop.hbase.backup.impl.IncrementalTableBackupClient.execute(IncrementalTableBackupClient.java:276)
> ... 7 more
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