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https://issues.apache.org/jira/browse/HBASE-21018?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16571064#comment-16571064
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Umesh Agashe commented on HBASE-21018:
--------------------------------------
Hi [~Apache9], any details you can provide on this will be helpful. thanks!
> RS crashed because AsyncFS was unable to update HDFS data encryption key
> ------------------------------------------------------------------------
>
> Key: HBASE-21018
> URL: https://issues.apache.org/jira/browse/HBASE-21018
> Project: HBase
> Issue Type: Bug
> Components: wal
> Affects Versions: 2.0.0
> Environment: Hadoop 3.0.0, HBase 2.0.0,
> HDFS configuration dfs.encrypt.data.transfer = true
> Reporter: Wei-Chiu Chuang
> Priority: Critical
> Attachments: HBASE-21018.master.001.patch
>
>
> We (+[~uagashe]) found HBase RegionServer doesn't update HDFS data encryption
> key correctly, and in some cases after retry 10 times, it aborts.
> {noformat}
> 2018-08-03 17:37:03,233 WARN
> org.apache.hadoop.hbase.io.asyncfs.FanOutOneBlockAsyncDFSOutputHelper: create
> fan-out dfs output
> /hbase/WALs/rs1.example.com,22101,1533318719239/rs1.example.com%2C22101%2C1533318719239.rs1.example.com%2C22101%2C1533318719239.regiongroup-0.1533343022981
> failed, retry = 1
> org.apache.hadoop.hdfs.protocol.datatransfer.InvalidEncryptionKeyException:
> Can't re-compute encryption key for nonce, since the required block key
> (keyID=1685436998) doesn't exist. Current key: 1085959374
> at
> org.apache.hadoop.hbase.io.asyncfs.FanOutOneBlockAsyncDFSOutputSaslHelper$SaslNegotiateHandler.check(FanOutOneBlockAsyncDFSOutputSaslHelper.java:399)
> at
> org.apache.hadoop.hbase.io.asyncfs.FanOutOneBlockAsyncDFSOutputSaslHelper$SaslNegotiateHandler.channelRead(FanOutOneBlockAsyncDFSOutputSaslHelper.java:470)
> at
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
> at
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
> at
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
> at
> org.apache.hbase.thirdparty.io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
> at
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
> at
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
> at
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
> at
> org.apache.hbase.thirdparty.io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:310)
> at
> org.apache.hbase.thirdparty.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:284)
> at
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
> at
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
> at
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
> at
> org.apache.hbase.thirdparty.io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:286)
> at
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
> at
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
> at
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
> at
> org.apache.hbase.thirdparty.io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1359)
> at
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
> at
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
> at
> org.apache.hbase.thirdparty.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:935)
> at
> org.apache.hbase.thirdparty.io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:801)
> at
> org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:404)
> at
> org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:304)
> at
> org.apache.hbase.thirdparty.io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858)
> at
> org.apache.hbase.thirdparty.io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:138)
> at java.lang.Thread.run(Thread.java:748)
> {noformat}
> It appears similar to HDFS-10609 and HDFS-11741. There are cases where
> dfsclient has to clear its local cache of data encryption key when a DataNode
> finds the key expires. Now that asyncfs implements the fan-out block writer,
> HBase has to take care of the update of DEK too.
>
> I have a simple fix (similar to what's implemented in HDFS-10609 and
> HDFS-11741), but making a test seems quite involved.
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