Wei-Chiu Chuang created HDDS-10256:
--------------------------------------
Summary: Block allocation should retry if SCM is in safe mode
Key: HDDS-10256
URL: https://issues.apache.org/jira/browse/HDDS-10256
Project: Apache Ozone
Issue Type: Bug
Reporter: Wei-Chiu Chuang
[~pratyush.bhatt] found that HBase goes down when Ozone is in Rolling restart.
Turns out OM doesn't seem to retry allocating blocks if SCM is in safe mode.
{noformat}
2024-01-30 16:57:39,846 [om1-OMStateMachineApplyTransactionThread - 0] INFO
bucket.OMBucketCreateRequest
(OMBucketCreateRequest.java:validateAndUpdateCache(296)) - created bucket:
weichiu of layout FILE_SYSTEM_OPTIMIZED in volume: user
16:57:39.869 [IPC Server handler 0 on default port 15036] ERROR SCMAudit -
user=weichiu | ip=10.96.129.4 | op=ALLOCATE_BLOCK {replication=RATIS/THREE,
owner=omServiceIdDefault, size=4194304, num=1, client=} | ret=FAILURE
org.apache.hadoop.hdds.scm.exceptions.SCMException: SafeModePrecheck failed for
allocateBlock
at
org.apache.hadoop.hdds.scm.block.BlockManagerImpl.allocateBlock(BlockManagerImpl.java:157)
~[classes/:?]
at
org.apache.hadoop.hdds.scm.server.SCMBlockProtocolServer.allocateBlock(SCMBlockProtocolServer.java:204)
~[classes/:?]
at
org.apache.hadoop.hdds.scm.protocol.ScmBlockLocationProtocolServerSideTranslatorPB.allocateScmBlock(ScmBlockLocationProtocolServerSideTranslatorPB.java:192)
~[classes/:?]
at
org.apache.hadoop.hdds.scm.protocol.ScmBlockLocationProtocolServerSideTranslatorPB.processMessage(ScmBlockLocationProtocolServerSideTranslatorPB.java:142)
~[classes/:?]
at
org.apache.hadoop.hdds.server.OzoneProtocolMessageDispatcher.processRequest(OzoneProtocolMessageDispatcher.java:89)
[classes/:?]
at
org.apache.hadoop.hdds.scm.protocol.ScmBlockLocationProtocolServerSideTranslatorPB.send(ScmBlockLocationProtocolServerSideTranslatorPB.java:113)
[classes/:?]
at
org.apache.hadoop.hdds.protocol.proto.ScmBlockLocationProtocolProtos$ScmBlockLocationProtocolService$2.callBlockingMethod(ScmBlockLocationProtocolProtos.java:14430)
[classes/:?]
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server.processCall(ProtobufRpcEngine.java:484)
[hadoop-common-3.3.6.jar:?]
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:595)
[hadoop-common-3.3.6.jar:?]
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:573)
[hadoop-common-3.3.6.jar:?]
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1227)
[hadoop-common-3.3.6.jar:?]
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1094)
[hadoop-common-3.3.6.jar:?]
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1017)
[hadoop-common-3.3.6.jar:?]
at java.security.AccessController.doPrivileged(Native Method)
~[?:1.8.0_392]
at javax.security.auth.Subject.doAs(Subject.java:422) [?:1.8.0_392]
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1899)
[hadoop-common-3.3.6.jar:?]
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:3048)
[hadoop-common-3.3.6.jar:?]
{noformat}
We should retry. I'll attach a reproduction test case for reference.
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