[
https://issues.apache.org/jira/browse/HBASE-19997?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16522034#comment-16522034
]
Duo Zhang commented on HBASE-19997:
-----------------------------------
Tried rolling_upgrade from 1.4.3 to the current 2.1.0, the 1.4.3 client will
hang on locating regions.
{noformat}
"TestClient-0" #41 prio=5 os_prio=0 tid=0x00000000023a7800 nid=0x1e1f3 in
Object.wait() [0x00007fbff7cfa000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:460)
at java.util.concurrent.TimeUnit.timedWait(TimeUnit.java:348)
at
org.apache.hadoop.hbase.client.ResultBoundedCompletionService.pollForSpecificCompletedTask(ResultBoundedCompletionService.java:258)
- locked <0x00000000872b4698> (a
[Lorg.apache.hadoop.hbase.client.ResultBoundedCompletionService$QueueingFuture;)
at
org.apache.hadoop.hbase.client.ResultBoundedCompletionService.pollForFirstSuccessfullyCompletedTask(ResultBoundedCompletionService.java:214)
at
org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:228)
at
org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:58)
at
org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:219)
at
org.apache.hadoop.hbase.client.ClientScanner.call(ClientScanner.java:277)
at
org.apache.hadoop.hbase.client.ClientScanner.loadCache(ClientScanner.java:438)
at
org.apache.hadoop.hbase.client.ClientScanner.next(ClientScanner.java:312)
at
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegionInMeta(ConnectionManager.java:1324)
at
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1221)
at
org.apache.hadoop.hbase.client.AsyncProcess.submit(AsyncProcess.java:496)
at
org.apache.hadoop.hbase.client.AsyncProcess.submit(AsyncProcess.java:436)
at
org.apache.hadoop.hbase.client.BufferedMutatorImpl.backgroundFlushCommits(BufferedMutatorImpl.java:233)
at
org.apache.hadoop.hbase.client.BufferedMutatorImpl.mutate(BufferedMutatorImpl.java:169)
at
org.apache.hadoop.hbase.client.BufferedMutatorImpl.mutate(BufferedMutatorImpl.java:131)
at
org.apache.hadoop.hbase.PerformanceEvaluation$RandomWriteTest.testRow(PerformanceEvaluation.java:1414)
at
org.apache.hadoop.hbase.PerformanceEvaluation$Test.testTimed(PerformanceEvaluation.java:1126)
at
org.apache.hadoop.hbase.PerformanceEvaluation$Test.test(PerformanceEvaluation.java:1099)
at
org.apache.hadoop.hbase.PerformanceEvaluation.runOneClient(PerformanceEvaluation.java:1757)
at
org.apache.hadoop.hbase.PerformanceEvaluation$1.call(PerformanceEvaluation.java:430)
at
org.apache.hadoop.hbase.PerformanceEvaluation$1.call(PerformanceEvaluation.java:425)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
{noformat}
Let me dig more.
> [rolling upgrade] 1.x => 2.x
> ----------------------------
>
> Key: HBASE-19997
> URL: https://issues.apache.org/jira/browse/HBASE-19997
> Project: HBase
> Issue Type: Umbrella
> Reporter: stack
> Priority: Blocker
> Fix For: 2.1.0
>
> Attachments: Screenshot from 2018-05-03 14-43-46.png
>
>
> An umbrella issue of issues needed so folks can do a rolling upgrade from
> hbase-1.x to hbase-2.x.
> (Recent) Notables:
> * hbase-1.x can't read hbase-2.x WALs -- hbase-1.x doesn't know the
> AsyncProtobufLogWriter class used writing the WAL -- see
> https://issues.apache.org/jira/browse/HBASE-19166?focusedCommentId=16362897&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16362897
> for exception.
> ** Might be ok... means WAL split fails on an hbase1 RS... must wait till an
> hbase-2.x RS picks up the WAL for it to be split.
> * hbase-1 can't open regions from tables created by hbase-2; it can't find
> the Table descriptor. See
> https://issues.apache.org/jira/browse/HBASE-19116?focusedCommentId=16363276&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16363276
> ** This might be ok if the tables we are doing rolling upgrade over were
> written with hbase-1.
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