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https://issues.apache.org/jira/browse/HBASE-10897?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jimmy Xiang reopened HBASE-10897:
---------------------------------
With this fix, the master web UI is not available while it's finishing the
initialization. Perhaps we just need to wait till meta is assigned? Let me take
another look.
> On master start, deadlock if refresh UI
> ---------------------------------------
>
> Key: HBASE-10897
> URL: https://issues.apache.org/jira/browse/HBASE-10897
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.99.0
> Reporter: stack
> Assignee: Jimmy Xiang
> Fix For: 0.99.0
>
> Attachments: hbase-10897.patch
>
>
> Playing w/ MTTR recovery on trunk, master starting up deadlocked:
> Waiting to finish active master initialization:
> {code}
> "ActiveMasterManager" daemon prio=10 tid=0x00007fafb5dc3800 nid=0x5fb5
> waiting for monitor entry [0x00007faf8f57d000]
> java.lang.Thread.State: BLOCKED (on object monitor)
> at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.getKeepAliveZooKeeperWatcher(ConnectionManager.java:1683)
> - waiting to lock <0x000000064ab4b9a8> (a java.lang.Object)
> at
> org.apache.hadoop.hbase.client.ZooKeeperRegistry.getMetaRegionLocation(ZooKeeperRegistry.java:53)
> at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1029)
> at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:989)
> at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.getRegionLocation(ConnectionManager.java:830)
> at
> org.apache.hadoop.hbase.client.ConnectionAdapter.getRegionLocation(ConnectionAdapter.java:305)
> at
> org.apache.hadoop.hbase.client.RegionServerCallable.prepare(RegionServerCallable.java:77)
> at
> org.apache.hadoop.hbase.client.ScannerCallable.prepare(ScannerCallable.java:118)
> at
> org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:101)
> at
> org.apache.hadoop.hbase.client.ClientScanner.nextScanner(ClientScanner.java:264)
> at
> org.apache.hadoop.hbase.client.ClientScanner.initializeScannerInConstruction(ClientScanner.java:169)
> at
> org.apache.hadoop.hbase.client.ClientScanner.<init>(ClientScanner.java:164)
> at
> org.apache.hadoop.hbase.client.ClientScanner.<init>(ClientScanner.java:107)
> at org.apache.hadoop.hbase.client.HTable.getScanner(HTable.java:766)
> at
> org.apache.hadoop.hbase.catalog.MetaReader.fullScan(MetaReader.java:539)
> at
> org.apache.hadoop.hbase.catalog.MetaReader.fullScanOfMeta(MetaReader.java:140)
> at
> org.apache.hadoop.hbase.catalog.MetaMigrationConvertingToPB.isMetaTableUpdated(MetaMigrationConvertingToPB.java:164)
> at
> org.apache.hadoop.hbase.catalog.MetaMigrationConvertingToPB.updateMetaIfNecessary(MetaMigrationConvertingToPB.java:131)
> at
> org.apache.hadoop.hbase.master.HMaster.finishActiveMasterInitialization(HMaster.java:567)
> at org.apache.hadoop.hbase.master.HMaster.access$500(HMaster.java:147)
> at org.apache.hadoop.hbase.master.HMaster$1.run(HMaster.java:1242)
> at java.lang.Thread.run(Thread.java:744)
> {code}
> ... but the master servlet has the lock while trying to access master:
> {code}
> "686004346@qtp-2101021459-0" daemon prio=10 tid=0x00007fafb5d2a800 nid=0x5fb1
> waiting on condition [0x00007faf8f87f000]
> java.lang.Thread.State: TIMED_WAITING (sleeping)
> at java.lang.Thread.sleep(Native Method)
> at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation$StubMaker.makeStub(ConnectionManager.java:1562)
> - locked <0x000000064ab4b9a8> (a java.lang.Object)
> at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation$MasterServiceStubMaker.makeStub(ConnectionManager.java:1597)
> at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.getKeepAliveMasterService(ConnectionManager.java:1805)
> - locked <0x000000064ab4b9a8> (a java.lang.Object)
> at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.listTables(ConnectionManager.java:2481)
> at
> org.apache.hadoop.hbase.client.HBaseAdmin.listTables(HBaseAdmin.java:321)
> at
> org.apache.hadoop.hbase.tmpl.master.MasterStatusTmplImpl.__jamon_innerUnit__userTables(MasterStatusTmplImpl.java:530)
> at
> org.apache.hadoop.hbase.tmpl.master.MasterStatusTmplImpl.renderNoFlush(MasterStatusTmplImpl.java:255)
> at
> org.apache.hadoop.hbase.tmpl.master.MasterStatusTmpl.renderNoFlush(MasterStatusTmpl.java:382)
> at
> org.apache.hadoop.hbase.tmpl.master.MasterStatusTmpl.render(MasterStatusTmpl.java:372)
> at
> org.apache.hadoop.hbase.master.MasterStatusServlet.doGet(MasterStatusServlet.java:102)
> ...
> {code}
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