does anyone have idea on how to run multiple sequential jobs with bash script

Hello folks:
I am running several hadoop applications on hdfs. To save the efforts in
issuing the set of commands every time, I am trying to use bash script to
run the several applications sequentially. To let the job finishes before it
is proceeding to the next job, I am using wait in the script like below.

sh bin/start-all.sh
wait
echo cluster start
(bin/hadoop jar hadoop-0.17.0-examples.jar randomwriter -D
test.randomwrite.bytes_per_map=107374182 rand)
wait
bin/hadoop jar hadoop-0.17.0-examples.jar randomtextwriter  -D
test.randomtextwrite.total_bytes=107374182 rand-text
bin/stop-all.sh
echo finished hdfs randomwriter experiment


However, it always give the error like below. Does anyone have better idea
on how to run the multiple sequential jobs with bash script?

HadoopScript.sh: line 39: wait: pid 10 is not a child of this shell

org.apache.hadoop.ipc.RemoteException:
org.apache.hadoop.mapred.JobTracker$IllegalStateException: Job tracker still
initializing
        at
org.apache.hadoop.mapred.JobTracker.ensureRunning(JobTracker.java:1722)
        at
org.apache.hadoop.mapred.JobTracker.getNewJobId(JobTracker.java:1730)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:446)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:896)

        at org.apache.hadoop.ipc.Client.call(Client.java:557)
        at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:212)
        at $Proxy1.getNewJobId(Unknown Source)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at
org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82)
        at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
        at $Proxy1.getNewJobId(Unknown Source)
        at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:696)
        at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:973)
        at
org.apache.hadoop.examples.RandomWriter.run(RandomWriter.java:276)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at
org.apache.hadoop.examples.RandomWriter.main(RandomWriter.java:287)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at
org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
        at
org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
        at
org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:53)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:155)
        at org.apache.hadoop.mapred.JobShell.run(JobShell.java:194)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
        at org.apache.hadoop.mapred.JobShell.main(JobShell.java:220)