petersomogyi commented on pull request #4101:
URL: https://github.com/apache/hbase/pull/4101#issuecomment-1032821315


   > what does this behavior look like during the default interactive mode?
   
   ```
   ➜  hbase-upstream git:(HBASE-26741) ✗ bin/hbase shell
   2022-02-08T17:34:52,336 WARN  [main] util.NativeCodeLoader: Unable to load 
native-hadoop library for your platform... using builtin-java classes where 
applicable
   HBase Shell
   Use "help" to get list of supported commands.
   Use "exit" to quit this interactive shell.
   For Reference, please visit: http://hbase.apache.org/book.html#shell
   Version 3.0.0-alpha-3-SNAPSHOT, re848d3b9d95e2c0f3c091285f6ecf50bf9330987, 
Tue Feb  8 17:02:57 CET 2022
   Took 0.0013 seconds
   hbase:001:0> scan 'foo'
   ROW                                          COLUMN+CELL
   2022-02-08T17:35:07,724 WARN  [RPCClient-NioEventLoopGroup-1-2] 
client.AsyncNonMetaRegionLocator: Failed to locate region in 'foo', row='', 
locateType=CURRENT
   org.apache.hadoop.hbase.TableNotFoundException: foo
        at 
org.apache.hadoop.hbase.client.AsyncNonMetaRegionLocator$1.onComplete(AsyncNonMetaRegionLocator.java:503)
 ~[hbase-client-3.0.0-alpha-3-SNAPSHOT.jar:3.0.0-alpha-3-SNAPSHOT]
        at 
org.apache.hadoop.hbase.client.AsyncClientScanner.lambda$startScan$1(AsyncClientScanner.java:183)
 ~[hbase-client-3.0.0-alpha-3-SNAPSHOT.jar:3.0.0-alpha-3-SNAPSHOT]
        at 
org.apache.hadoop.hbase.util.FutureUtils.lambda$addListener$0(FutureUtils.java:68)
 ~[hbase-common-3.0.0-alpha-3-SNAPSHOT.jar:3.0.0-alpha-3-SNAPSHOT]
        at 
java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:774)
 ~[?:1.8.0_242]
        at 
java.util.concurrent.CompletableFuture.uniWhenCompleteStage(CompletableFuture.java:792)
 ~[?:1.8.0_242]
        at 
java.util.concurrent.CompletableFuture.whenComplete(CompletableFuture.java:2153)
 ~[?:1.8.0_242]
        at 
org.apache.hadoop.hbase.util.FutureUtils.addListener(FutureUtils.java:61) 
~[hbase-common-3.0.0-alpha-3-SNAPSHOT.jar:3.0.0-alpha-3-SNAPSHOT]
        at 
org.apache.hadoop.hbase.client.AsyncClientScanner.startScan(AsyncClientScanner.java:166)
 ~[hbase-client-3.0.0-alpha-3-SNAPSHOT.jar:3.0.0-alpha-3-SNAPSHOT]
        at 
org.apache.hadoop.hbase.client.AsyncClientScanner.lambda$openScanner$2(AsyncClientScanner.java:212)
 ~[hbase-client-3.0.0-alpha-3-SNAPSHOT.jar:3.0.0-alpha-3-SNAPSHOT]
        at 
org.apache.hadoop.hbase.util.FutureUtils.lambda$addListener$0(FutureUtils.java:68)
 ~[hbase-common-3.0.0-alpha-3-SNAPSHOT.jar:3.0.0-alpha-3-SNAPSHOT]
        at 
java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:774)
 ~[?:1.8.0_242]
        at 
java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:750)
 ~[?:1.8.0_242]
        at 
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488) 
~[?:1.8.0_242]
        at 
java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1975) 
~[?:1.8.0_242]
        at 
org.apache.hadoop.hbase.client.AsyncSingleRequestRpcRetryingCaller.lambda$call$4(AsyncSingleRequestRpcRetryingCaller.java:90)
 ~[hbase-client-3.0.0-alpha-3-SNAPSHOT.jar:3.0.0-alpha-3-SNAPSHOT]
        at 
org.apache.hadoop.hbase.util.FutureUtils.lambda$addListener$0(FutureUtils.java:68)
 ~[hbase-common-3.0.0-alpha-3-SNAPSHOT.jar:3.0.0-alpha-3-SNAPSHOT]
        at 
java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:774)
 ~[?:1.8.0_242]
        at 
java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:750)
 ~[?:1.8.0_242]
        at 
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488) 
~[?:1.8.0_242]
        at 
java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1975) 
~[?:1.8.0_242]
        at 
org.apache.hadoop.hbase.client.AsyncClientScanner.lambda$callOpenScanner$0(AsyncClientScanner.java:157)
 ~[hbase-client-3.0.0-alpha-3-SNAPSHOT.jar:3.0.0-alpha-3-SNAPSHOT]
        at 
org.apache.hbase.thirdparty.com.google.protobuf.RpcUtil$1.run(RpcUtil.java:79) 
[hbase-shaded-protobuf-4.0.1.jar:4.0.1]
        at 
org.apache.hbase.thirdparty.com.google.protobuf.RpcUtil$1.run(RpcUtil.java:70) 
[hbase-shaded-protobuf-4.0.1.jar:4.0.1]
        at 
org.apache.hadoop.hbase.ipc.AbstractRpcClient.onCallFinished(AbstractRpcClient.java:395)
 [hbase-client-3.0.0-alpha-3-SNAPSHOT.jar:3.0.0-alpha-3-SNAPSHOT]
        at 
org.apache.hadoop.hbase.ipc.AbstractRpcClient.access$100(AbstractRpcClient.java:96)
 [hbase-client-3.0.0-alpha-3-SNAPSHOT.jar:3.0.0-alpha-3-SNAPSHOT]
        at 
org.apache.hadoop.hbase.ipc.AbstractRpcClient$3.run(AbstractRpcClient.java:428) 
[hbase-client-3.0.0-alpha-3-SNAPSHOT.jar:3.0.0-alpha-3-SNAPSHOT]
        at 
org.apache.hadoop.hbase.ipc.AbstractRpcClient$3.run(AbstractRpcClient.java:423) 
[hbase-client-3.0.0-alpha-3-SNAPSHOT.jar:3.0.0-alpha-3-SNAPSHOT]
        at org.apache.hadoop.hbase.ipc.Call.callComplete(Call.java:119) 
[hbase-client-3.0.0-alpha-3-SNAPSHOT.jar:3.0.0-alpha-3-SNAPSHOT]
        at org.apache.hadoop.hbase.ipc.Call.setResponse(Call.java:151) 
[hbase-client-3.0.0-alpha-3-SNAPSHOT.jar:3.0.0-alpha-3-SNAPSHOT]
        at 
org.apache.hadoop.hbase.ipc.NettyRpcDuplexHandler.readResponse(NettyRpcDuplexHandler.java:188)
 [hbase-client-3.0.0-alpha-3-SNAPSHOT.jar:3.0.0-alpha-3-SNAPSHOT]
        at 
org.apache.hadoop.hbase.ipc.NettyRpcDuplexHandler.channelRead(NettyRpcDuplexHandler.java:196)
 [hbase-client-3.0.0-alpha-3-SNAPSHOT.jar:3.0.0-alpha-3-SNAPSHOT]
        at 
org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:296)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:286)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:719)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
 [hbase-shaded-netty-4.0.1.jar:?]
        at 
org.apache.hbase.thirdparty.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
 [hbase-shaded-netty-4.0.1.jar:?]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_242]
   
   ERROR: Unknown table foo!
   
   For usage try 'help "scan"'
   
   Took 0.1422 seconds
   hbase:002:0> exit
   ➜  hbase-upstream git:(HBASE-26741) ✗ echo $?
   0
   ```


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