Shinya Yoshida created HDFS-16332:
-------------------------------------
Summary: Expired block token causes slow read due to missing
handling in sasl handshake
Key: HDFS-16332
URL: https://issues.apache.org/jira/browse/HDFS-16332
Project: Hadoop HDFS
Issue Type: Bug
Components: datanode, dfs, dfsclient
Affects Versions: 3.3.1, 2.8.5
Reporter: Shinya Yoshida
Attachments: Screenshot from 2021-11-18 12-11-34.png, Screenshot from
2021-11-18 12-14-29.png, Screenshot from 2021-11-18 13-31-35.png
We're operating the HBase 1.4.x cluster on Hadoop 2.8.5.
We're recently evaluating Kerberos secured HBase and Hadoop cluster with
production load and we observed HBase's response slows >= several seconds, and
about several minutes for worst-case (about once~three times a month).
The following image is a scatter plot of HBase's response slow, each circle is
each base's slow response log.
The X-axis is the date time of the log occurred, the Y-axis is the response
slow time.
!Screenshot from 2021-11-18 12-14-29.png!
We could reproduce this issue by reducing "dfs.block.access.token.lifetime" and
we could figure out the cause.
(We used dfs.block.access.token.lifetime=60, i.e. 1 hour)
When hedged read enabled:
!Screenshot from 2021-11-18 12-11-34.png!
When hedged read disabled:
!Screenshot from 2021-11-18 13-31-35.png!
As you can see, it's worst if the hedged read is enabled. However, it's happen
whether the hedged read is enabled or not.
This impacts our 99%tile response time.
This happens when the block token is expired and the root cause is the wrong
handling of the InvalidToken exception in sasl handshake in
SaslDataTransferServer.
We could reproduce this issue by the following test code.
We could reproduce this issue in 2.8.5 branch and trunk with this test code.
```
// HDFS is configured as secure cluster
try (FileSystem fs = newFileSystem();
FSDataInputStream in = fs.open(PATH)) {
waitBlockTokenExpired(in);
in.read(0, bytes, 0, bytes.length)
}
private void waitBlockTokenExpired(FSDataInputStream in1) throws Exception {
DFSInputStream innerStream = (DFSInputStream) in1.getWrappedStream();
for (LocatedBlock block : innerStream.getAllBlocks()) {
while (!SecurityTestUtil.isBlockTokenExpired(block.getBlockToken())) {
Thread.sleep(100);
}
}
}
```
Here is the log we got, we added a custom log before and after the block token
refresh:
https://github.com/bitterfox/hadoop/commit/173a9f876f2264b76af01d658f624197936fd79c
```
2021-11-16 09:40:20,330 WARN [hedgedRead-247] impl.BlockReaderFactory: I/O
error constructing remote block reader.
java.io.IOException: DIGEST-MD5: IO error acquiring password
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.DataTransferSaslUtil.readSaslMessageAndNegotiatedCipherOption(DataTransferSaslUtil.java:420)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.doSaslHandshake(SaslDataTransferClient.java:475)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.getSaslStreams(SaslDataTransferClient.java:389)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.send(SaslDataTransferClient.java:263)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.checkTrustAndSend(SaslDataTransferClient.java:211)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.peerSend(SaslDataTransferClient.java:160)
at
org.apache.hadoop.hdfs.DFSUtilClient.peerFromSocketAndKey(DFSUtilClient.java:568)
at
org.apache.hadoop.hdfs.DFSClient.newConnectedPeer(DFSClient.java:2880)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.nextTcpPeer(BlockReaderFactory.java:815)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.getRemoteBlockReaderFromTcp(BlockReaderFactory.java:740)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.build(BlockReaderFactory.java:385)
at
org.apache.hadoop.hdfs.DFSInputStream.getBlockReader(DFSInputStream.java:697)
at
org.apache.hadoop.hdfs.DFSInputStream.actualGetFromOneDataNode(DFSInputStream.java:1237)
at
org.apache.hadoop.hdfs.DFSInputStream.actualGetFromOneDataNode(DFSInputStream.java:1205)
at
org.apache.hadoop.hdfs.DFSInputStream.access$000(DFSInputStream.java:98)
at
org.apache.hadoop.hdfs.DFSInputStream$2.call(DFSInputStream.java:1189)
at
org.apache.hadoop.hdfs.DFSInputStream$2.call(DFSInputStream.java:1181)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
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)
2021-11-16 09:40:20,331 WARN [hedgedRead-247] hdfs.DFSClient: Connection
failure: Failed to connect to /10.10.10.1:12345 for file
/hbase/data/default/test_table/<encoded-region-name>/o/<store-file> for block
BP-123456789-10.20.20.1-1629777195910:blk_9876543212_1357924:java.io.IOException:
DIGEST-MD5: IO error acquiring password
java.io.IOException: DIGEST-MD5: IO error acquiring password
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.DataTransferSaslUtil.readSaslMessageAndNegotiatedCipherOption(DataTransferSaslUtil.java:420)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.doSaslHandshake(SaslDataTransferClient.java:475)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.getSaslStreams(SaslDataTransferClient.java:389)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.send(SaslDataTransferClient.java:263)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.checkTrustAndSend(SaslDataTransferClient.java:211)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.peerSend(SaslDataTransferClient.java:160)
at
org.apache.hadoop.hdfs.DFSUtilClient.peerFromSocketAndKey(DFSUtilClient.java:568)
at
org.apache.hadoop.hdfs.DFSClient.newConnectedPeer(DFSClient.java:2880)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.nextTcpPeer(BlockReaderFactory.java:815)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.getRemoteBlockReaderFromTcp(BlockReaderFactory.java:740)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.build(BlockReaderFactory.java:385)
at
org.apache.hadoop.hdfs.DFSInputStream.getBlockReader(DFSInputStream.java:697)
at
org.apache.hadoop.hdfs.DFSInputStream.actualGetFromOneDataNode(DFSInputStream.java:1237)
at
org.apache.hadoop.hdfs.DFSInputStream.actualGetFromOneDataNode(DFSInputStream.java:1205)
at
org.apache.hadoop.hdfs.DFSInputStream.access$000(DFSInputStream.java:98)
at
org.apache.hadoop.hdfs.DFSInputStream$2.call(DFSInputStream.java:1189)
at
org.apache.hadoop.hdfs.DFSInputStream$2.call(DFSInputStream.java:1181)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
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)
2021-11-16 09:40:20,332 WARN [hedgedRead-247] impl.BlockReaderFactory: I/O
error constructing remote block reader.
java.io.IOException: DIGEST-MD5: IO error acquiring password
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.DataTransferSaslUtil.readSaslMessageAndNegotiatedCipherOption(DataTransferSaslUtil.java:420)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.doSaslHandshake(SaslDataTransferClient.java:475)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.getSaslStreams(SaslDataTransferClient.java:389)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.send(SaslDataTransferClient.java:263)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.checkTrustAndSend(SaslDataTransferClient.java:211)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.peerSend(SaslDataTransferClient.java:160)
at
org.apache.hadoop.hdfs.DFSUtilClient.peerFromSocketAndKey(DFSUtilClient.java:568)
at
org.apache.hadoop.hdfs.DFSClient.newConnectedPeer(DFSClient.java:2880)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.nextTcpPeer(BlockReaderFactory.java:815)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.getRemoteBlockReaderFromTcp(BlockReaderFactory.java:740)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.build(BlockReaderFactory.java:385)
at
org.apache.hadoop.hdfs.DFSInputStream.getBlockReader(DFSInputStream.java:697)
at
org.apache.hadoop.hdfs.DFSInputStream.actualGetFromOneDataNode(DFSInputStream.java:1237)
at
org.apache.hadoop.hdfs.DFSInputStream.actualGetFromOneDataNode(DFSInputStream.java:1205)
at
org.apache.hadoop.hdfs.DFSInputStream.access$000(DFSInputStream.java:98)
at
org.apache.hadoop.hdfs.DFSInputStream$2.call(DFSInputStream.java:1189)
at
org.apache.hadoop.hdfs.DFSInputStream$2.call(DFSInputStream.java:1181)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
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)
2021-11-16 09:40:20,332 WARN [hedgedRead-247] hdfs.DFSClient: Connection
failure: Failed to connect to /10.10.10.2:12345 for file
/hbase/data/default/test_table/<encoded-region-name>/o/<store-file> for block
BP-123456789-10.20.20.1-1629777195910:blk_9876543212_1357924:java.io.IOException:
DIGEST-MD5: IO error acquiring password
java.io.IOException: DIGEST-MD5: IO error acquiring password
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.DataTransferSaslUtil.readSaslMessageAndNegotiatedCipherOption(DataTransferSaslUtil.java:420)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.doSaslHandshake(SaslDataTransferClient.java:475)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.getSaslStreams(SaslDataTransferClient.java:389)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.send(SaslDataTransferClient.java:263)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.checkTrustAndSend(SaslDataTransferClient.java:211)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.peerSend(SaslDataTransferClient.java:160)
at
org.apache.hadoop.hdfs.DFSUtilClient.peerFromSocketAndKey(DFSUtilClient.java:568)
at
org.apache.hadoop.hdfs.DFSClient.newConnectedPeer(DFSClient.java:2880)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.nextTcpPeer(BlockReaderFactory.java:815)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.getRemoteBlockReaderFromTcp(BlockReaderFactory.java:740)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.build(BlockReaderFactory.java:385)
at
org.apache.hadoop.hdfs.DFSInputStream.getBlockReader(DFSInputStream.java:697)
at
org.apache.hadoop.hdfs.DFSInputStream.actualGetFromOneDataNode(DFSInputStream.java:1237)
at
org.apache.hadoop.hdfs.DFSInputStream.actualGetFromOneDataNode(DFSInputStream.java:1205)
at
org.apache.hadoop.hdfs.DFSInputStream.access$000(DFSInputStream.java:98)
at
org.apache.hadoop.hdfs.DFSInputStream$2.call(DFSInputStream.java:1189)
at
org.apache.hadoop.hdfs.DFSInputStream$2.call(DFSInputStream.java:1181)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
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)
2021-11-16 09:40:20,333 WARN [hedgedRead-247] impl.BlockReaderFactory: I/O
error constructing remote block reader.
java.io.IOException: DIGEST-MD5: IO error acquiring password
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.DataTransferSaslUtil.readSaslMessageAndNegotiatedCipherOption(DataTransferSaslUtil.java:420)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.doSaslHandshake(SaslDataTransferClient.java:475)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.getSaslStreams(SaslDataTransferClient.java:389)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.send(SaslDataTransferClient.java:263)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.checkTrustAndSend(SaslDataTransferClient.java:211)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.peerSend(SaslDataTransferClient.java:160)
at
org.apache.hadoop.hdfs.DFSUtilClient.peerFromSocketAndKey(DFSUtilClient.java:568)
at
org.apache.hadoop.hdfs.DFSClient.newConnectedPeer(DFSClient.java:2880)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.nextTcpPeer(BlockReaderFactory.java:815)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.getRemoteBlockReaderFromTcp(BlockReaderFactory.java:740)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.build(BlockReaderFactory.java:385)
at
org.apache.hadoop.hdfs.DFSInputStream.getBlockReader(DFSInputStream.java:697)
at
org.apache.hadoop.hdfs.DFSInputStream.actualGetFromOneDataNode(DFSInputStream.java:1237)
at
org.apache.hadoop.hdfs.DFSInputStream.actualGetFromOneDataNode(DFSInputStream.java:1205)
at
org.apache.hadoop.hdfs.DFSInputStream.access$000(DFSInputStream.java:98)
at
org.apache.hadoop.hdfs.DFSInputStream$2.call(DFSInputStream.java:1189)
at
org.apache.hadoop.hdfs.DFSInputStream$2.call(DFSInputStream.java:1181)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
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)
2021-11-16 09:40:20,334 WARN [hedgedRead-247] hdfs.DFSClient: Connection
failure: Failed to connect to /10.10.10.3:12345 for file
/hbase/data/default/test_table/<encoded-region-name>/o/<store-file> for block
BP-123456789-10.20.20.1-1629777195910:blk_9876543212_1357924:java.io.IOException:
DIGEST-MD5: IO error acquiring password
java.io.IOException: DIGEST-MD5: IO error acquiring password
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.DataTransferSaslUtil.readSaslMessageAndNegotiatedCipherOption(DataTransferSaslUtil.java:420)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.doSaslHandshake(SaslDataTransferClient.java:475)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.getSaslStreams(SaslDataTransferClient.java:389)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.send(SaslDataTransferClient.java:263)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.checkTrustAndSend(SaslDataTransferClient.java:211)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferClient.peerSend(SaslDataTransferClient.java:160)
at
org.apache.hadoop.hdfs.DFSUtilClient.peerFromSocketAndKey(DFSUtilClient.java:568)
at
org.apache.hadoop.hdfs.DFSClient.newConnectedPeer(DFSClient.java:2880)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.nextTcpPeer(BlockReaderFactory.java:815)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.getRemoteBlockReaderFromTcp(BlockReaderFactory.java:740)
at
org.apache.hadoop.hdfs.client.impl.BlockReaderFactory.build(BlockReaderFactory.java:385)
at
org.apache.hadoop.hdfs.DFSInputStream.getBlockReader(DFSInputStream.java:697)
at
org.apache.hadoop.hdfs.DFSInputStream.actualGetFromOneDataNode(DFSInputStream.java:1237)
at
org.apache.hadoop.hdfs.DFSInputStream.actualGetFromOneDataNode(DFSInputStream.java:1205)
at
org.apache.hadoop.hdfs.DFSInputStream.access$000(DFSInputStream.java:98)
at
org.apache.hadoop.hdfs.DFSInputStream$2.call(DFSInputStream.java:1189)
at
org.apache.hadoop.hdfs.DFSInputStream$2.call(DFSInputStream.java:1181)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
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)
2021-11-16 09:40:20,334 WARN
[RpcServer.default.RWQ.Fifo.read.handler=363,queue=28,port=10001]
hdfs.DFSClient: No live nodes contain block
BP-123456789-10.20.20.1-1629777195910:blk_9876543212_1357924 after checking
nodes = [DatanodeInfoWithStorage[10.10.10.1:12345,DS-*****,DISK],
DatanodeInfoWithStorage[10.10.10.2:12345,DS-*****,DISK],
DatanodeInfoWithStorage[10.10.10.3:12345,DS-*****,DISK]], ignoredNodes =
[DatanodeInfoWithStorage[10.10.10.1:12345,DS-*****,DISK],
DatanodeInfoWithStorage[10.10.10.2:12345,DS-*****,DISK],
DatanodeInfoWithStorage[10.10.10.3:12345,DS-*****,DISK]]
2021-11-16 09:40:20,334 INFO
[RpcServer.default.RWQ.Fifo.read.handler=363,queue=28,port=10001]
hdfs.DFSClient: Could not obtain
BP-123456789-10.20.20.1-1629777195910:blk_9876543212_1357924 from any node: No
live nodes contain current block Block locations:
DatanodeInfoWithStorage[10.10.10.1:12345,DS-*****,DISK]
DatanodeInfoWithStorage[10.10.10.2:12345,DS-*****,DISK]
DatanodeInfoWithStorage[10.10.10.3:12345,DS-*****,DISK] Dead nodes:
DatanodeInfoWithStorage[10.10.10.1:12345,DS-*****,DISK]
DatanodeInfoWithStorage[10.10.10.2:12345,DS-*****,DISK]
DatanodeInfoWithStorage[10.10.10.3:12345,DS-*****,DISK] Ignored nodes:
DatanodeInfoWithStorage[10.10.10.1:12345,DS-*****,DISK]
DatanodeInfoWithStorage[10.10.10.2:12345,DS-*****,DISK]
DatanodeInfoWithStorage[10.10.10.3:12345,DS-*****,DISK]. Will get new block
locations from namenode and retry...
2021-11-16 09:40:20,334 WARN
[RpcServer.default.RWQ.Fifo.read.handler=363,queue=28,port=10001]
hdfs.DFSClient: DFS chooseDataNode: got # 1 IOException, will wait for
523.0985342660828 msec.
2021-11-16 09:40:20,860 WARN
[RpcServer.default.RWQ.Fifo.read.handler=363,queue=28,port=10001]
hdfs.DFSClient: No live nodes contain block
BP-123456789-10.20.20.1-1629777195910:blk_9876543212_1357924 after checking
nodes = [DatanodeInfoWithStorage[10.10.10.2:12345,DS-*****,DISK],
DatanodeInfoWithStorage[10.10.10.1:12345,DS-*****,DISK],
DatanodeInfoWithStorage[10.10.10.3:12345,DS-*****,DISK]], ignoredNodes =
[DatanodeInfoWithStorage[10.10.10.1:12345,DS-*****,DISK],
DatanodeInfoWithStorage[10.10.10.2:12345,DS-*****,DISK],
DatanodeInfoWithStorage[10.10.10.3:12345,DS-*****,DISK]]
2021-11-16 09:40:20,860 INFO
[RpcServer.default.RWQ.Fifo.read.handler=363,queue=28,port=10001]
hdfs.DFSClient: Could not obtain
BP-123456789-10.20.20.1-1629777195910:blk_9876543212_1357924 from any node: No
live nodes contain current block Block locations:
DatanodeInfoWithStorage[10.10.10.2:12345,DS-*****,DISK]
DatanodeInfoWithStorage[10.10.10.1:12345,DS-*****,DISK]
DatanodeInfoWithStorage[10.10.10.3:12345,DS-*****,DISK] Dead nodes: Ignored
nodes: DatanodeInfoWithStorage[10.10.10.1:12345,DS-*****,DISK]
DatanodeInfoWithStorage[10.10.10.2:12345,DS-*****,DISK]
DatanodeInfoWithStorage[10.10.10.3:12345,DS-*****,DISK]. Will get new block
locations from namenode and retry...
2021-11-16 09:40:20,860 WARN
[RpcServer.default.RWQ.Fifo.read.handler=363,queue=28,port=10001]
hdfs.DFSClient: DFS chooseDataNode: got # 2 IOException, will wait for
8025.758935908773 msec.
2021-11-16 09:40:28,887 INFO
[RpcServer.default.RWQ.Fifo.read.handler=363,queue=28,port=10001]
hdfs.DFSClient: Could not obtain
BP-123456789-10.20.20.1-1629777195910:blk_9876543212_1357924 from any node: No
live nodes contain current block Block locations:
DatanodeInfoWithStorage[10.10.10.2:12345,DS-*****,
DISK] DatanodeInfoWithStorage[10.10.10.1:12345,DS-*****,DISK]
DatanodeInfoWithStorage[10.10.10.3:12345,DS-*****,DISK] Dead nodes: Ignored
nodes: DatanodeInfoWithStorage[10.10.10.1:12345,DS-*****,DISK]
DatanodeInfoWithStorage[10.10.10.2:1146
2,DS-*****,DISK] DatanodeInfoWithStorage[10.10.10.3:12345,DS-*****,DISK]. Will
get new block locations from namenode and retry...
2021-11-16 09:40:28,887 WARN
[RpcServer.default.RWQ.Fifo.read.handler=363,queue=28,port=10001]
hdfs.DFSClient: DFS chooseDataNode: got # 3 IOException, will wait for
7995.183785064122 msec.
2021-11-16 09:40:59,922 WARN
[RpcServer.default.RWQ.Fifo.read.handler=371,queue=36,port=10001]
ipc.RpcServer: (responseTooSlow):
{"call":"Multi(org.apache.hadoop.hbase.protobuf.generated.ClientProtos$MultiRequest)","multi.gets":3,"starttimems":"1637023220329","responsesize":"64393","method":"Multi","param":"region\u003d
test_table,***,1631095286710.<encoded-region-name>., for 3 action(s) and 1st
row
keyTRUNCATED","processingtimems":39592,"client":"10.30.30.1:56789","queuetimems":0,"multi.servicecalls":0,"class":"HRegionServer","multi.mutations":0}
```
As you can see, you see the IOException and then all datanodes are considered
dead nodes.
Also, you couldn't see the block token refresh occurring.
So the logic of refresh block token isn't performed for some cases and all
datanodes are marked as dead and then chooseDataNode and refetchLocations is
triggered with the sleep.
refetchLocations sleeps up to `dfsClient.getConf().getTimeWindow()` default is
3 second for first failure.
https://github.com/apache/hadoop/blob/91af256a5b44925e5dfdf333293251a19685ba2a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSInputStream.java#L982-L1046
That's why we see slows 0~3 secs for hedged read disabled.
refetchLocations clears dead nodes, but ignored node that managed in
hedgedFetchBlockByteRange are not cleared, so hedgedFetchBlockByteRange tries
refetchLocations many times up to
`dfsClient.getConf().getMaxBlockAcquireFailures()`
(sleep in refetchLocations is computed by `timeWindow * failure + timeWindow *
(failure + 1) * nextDouble()` and that's why we see several minutes response
slow when hedged read is enabled)
After these retries, BlockMissingException is thrown.
https://github.com/apache/hadoop/blob/91af256a5b44925e5dfdf333293251a19685ba2a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSInputStream.java#L1343-L1386
We dig into the IOException stacktrace and we found sasl handshake returns an
error.
We added the log in SaslDataTransferServer side:
https://github.com/bitterfox/hadoop/tree/saslhandshake-error-log
and then we got the following DN error:
```
2021-11-16 16:11:06,480 ERROR
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferServer:
Generic sasl error for client /10.10.10.4:45678
javax.security.sasl.SaslException: DIGEST-MD5: IO error acquiring password
[Caused by org.apache.hadoop.security.token.SecretManager$InvalidToken: Block
token with block_token_identifier (expiryDate=1637046306844, keyId=<keyid>,
userId=hbase, blockPoolId=BP-123456789-10.20.20.1-1629777195910,
blockId=<blockid>, access modes=[READ]) is expired.]
at
com.sun.security.sasl.digest.DigestMD5Server.validateClientResponse(DigestMD5Server.java:598)
at
com.sun.security.sasl.digest.DigestMD5Server.evaluateResponse(DigestMD5Server.java:244)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslParticipant.evaluateChallengeOrResponse(SaslParticipant.java:115)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferServer.doSaslHandshake(SaslDataTransferServer.java:376)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferServer.getSaslStreams(SaslDataTransferServer.java:300)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferServer.receive(SaslDataTransferServer.java:127)
at
org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:231)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.hadoop.security.token.SecretManager$InvalidToken: Block
token with block_token_identifier (expiryDate=1637046306844, keyId=<keyid>,
userId=hbase, blockPoolId=BP-123456789-10.20.20.1-1629777195910,
blockId=<blockid>, access modes=[READ]) is expired.
at
org.apache.hadoop.hdfs.security.token.block.BlockTokenSecretManager.retrievePassword(BlockTokenSecretManager.java:377)
at
org.apache.hadoop.hdfs.security.token.block.BlockPoolTokenSecretManager.retrievePassword(BlockPoolTokenSecretManager.java:80)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferServer.buildServerPassword(SaslDataTransferServer.java:318)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferServer.access$100(SaslDataTransferServer.java:73)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferServer$2.apply(SaslDataTransferServer.java:297)
at
org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferServer$SaslServerCallbackHandler.handle(SaslDataTransferServer.java:241)
at
com.sun.security.sasl.digest.DigestMD5Server.validateClientResponse(DigestMD5Server.java:589)
... 7 more
```
As you can see the expired token is used and retrievePassword used for sasl
throws InvalidToken exception.
retrievePassword:
https://github.com/apache/hadoop/blob/91af256a5b44925e5dfdf333293251a19685ba2a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/security/token/block/BlockTokenSecretManager.java#L501-L506
So if a connection is established newly after the block token is expired, this
issue happens.
I propose to add a new response code for DataTransferEncryptorStatus to request
the client to update the block token like DataTransferProtos does.
The test code and patch is available in ~~~
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