按照官方说法Doris的FE从节点的第一次启动必须是：./bin/start_fe.sh --helper host:port --daemon
否则就会出现元数据的以下错误，所以不要测试从节点的启动也需要上面的命令，不能用普通的启动FE的命令，
ERROR 1 [BDBEnvironment.setup():195] error to open replicated environment. will exit. com.sleepycat.je.EnvironmentFailureException: Environment invalid because of previous exception: (JE 7.3.7) 10.227.96.25_9110_1557800838823(-1):/ home/palo/palo/fe/palo-meta/bdb recoveryTracker should overlap or follow on disk last VLSN of 99,937,900 recoveryFirst= 99,937,902 UNEXPECTED _STATE_FATAL: Unexpected internal state, unable to continue. Environment is invalid and must be closed. at com.sleepycat.je.EnvironmentFailureException.unexpectedState(EnvironmentFailureException.java:443) ~[je-7.3.7.jar:7.3.7] at com.sleepycat.je.rep.vlsn.VLSNIndex.merge(VLSNIndex.java:1573) ~[je-7.3.7.jar:7.3.7] at com.sleepycat.je.rep.vlsn.VLSNIndex.init(VLSNIndex.java:1483) ~[je-7.3.7.jar:7.3.7] at com.sleepycat.je.rep.vlsn.VLSNIndex.(VLSNIndex.java:422) ~[je-7.3.7.jar:7.3.7] at com.sleepycat.je.rep.impl.RepImpl.preRecoveryCheckpointInit(RepImpl.java:567) ~[je-7.3.7.jar:7.3.7] at com.sleepycat.je.recovery.RecoveryManager.recover(RecoveryManager.java:461) ~[je-7.3.7.jar:7.3.7] at com.sleepycat.je.dbi.EnvironmentImpl.finishInit(EnvironmentImpl.java:841) ~[je-7.3.7.jar:7.3.7] at com.sleepycat.je.dbi.DbEnvPool.getEnvironment(DbEnvPool.java:222) ~[je-7.3.7.jar:7.3.7] at com.sleepycat.je.Environment.makeEnvironmentImpl(Environment.java:267) ~[je-7.3.7.jar:7.3.7] at com.sleepycat.je.Environment.(Environment.java:252) ~[je-7.3.7.jar:7.3.7] at com.sleepycat.je.rep.ReplicatedEnvironment.(ReplicatedEnvironment.java:607) ~[je-7.3.7.jar:7.3.7] at com.sleepycat.je.rep.ReplicatedEnvironment.(ReplicatedEnvironment.java:466) ~[je-7.3.7.jar:7.3.7] at com.sleepycat.je.rep.ReplicatedEnvironment.(ReplicatedEnvironment.java:540) ~[je-7.3.7.jar:7.3.7] at org.apache.doris.journal.bdbje.BDBEnvironment.setup(BDBEnvironment.java:146) [palo-fe.jar:?] at org.apache.doris.journal.bdbje.BDBJEJournal.open(BDBJEJournal.java:313) [palo-fe.jar:?] at org.apache.doris.persist.EditLog.open(EditLog.java:719) [palo-fe.jar:?] at org.apache.doris.catalog.Catalog.initialize(Catalog.java:645) [palo-fe.jar:?] at org.apache.doris.service.FeServer.setup(FeServer.java:44) [palo-fe.jar:?] at org.apache.doris.PaloFe.main(PaloFe.java:102) [palo-fe.jar:?]
若出现这个问题，反复重启是不行的，需要你将你的元数据文件夹palo-meta重命名，重新建立这个文件夹，
例如你在配置文件里配置了storage_root_path，则需要用上述方法操作，
再./bin/start_fe.sh --helper host:port --daemon就行了，