xhsky opened a new issue #3701:
URL: https://github.com/apache/rocketmq/issues/3701
**BUG REPORT**
1. Please describe the issue you observed:
Does the dLegerSelfId parameter value have to be two bytes and contain
letters and numbers? I tried it, only in this case can it start normally
- What did you do (The steps to reproduce)?
```
# cat conf/dledger.conf
brokerClusterName = mq_cluster
brokerName=node
listenPort=30911
namesrvAddr=mq1:9876;mq2:9876;mq3:9876
storePathRootDir=/tmp/rmqstore/node00
storePathCommitLog=/tmp/rmqstore/node00/commitlog
enableDLegerCommitLog=true
dLegerGroup=node
dLegerPeers=node1-mq1:40911;node2-mq2:40912;node3-mq3:40913
## must be unique
dLegerSelfId=node1
sendMessageThreadPoolNums=16
./bin/mqbroker -c conf/dledger.conf
java.lang.NumberFormatException: For input string: "ode1"
at
java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:580)
at java.lang.Integer.valueOf(Integer.java:766)
at
org.apache.rocketmq.store.dledger.DLedgerCommitLog.<init>(DLedgerCommitLog.java:98)
at
org.apache.rocketmq.store.DefaultMessageStore.<init>(DefaultMessageStore.java:129)
at
org.apache.rocketmq.broker.BrokerController.initialize(BrokerController.java:243)
at
org.apache.rocketmq.broker.BrokerStartup.createBrokerController(BrokerStartup.java:222)
at
org.apache.rocketmq.broker.BrokerStartup.main(BrokerStartup.java:58)
```
2. Please tell us about your environment:
os version: Centos7
jdk version: jdk-8u251-linux-x64.tar.gz
mq version: rocketmq-all-4.8.0-bin-release.zip
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