Ingestion task can't be launched in docker

[FrankChen021]

#12839 introduces a script run-java to start the peon tasks, and this script requires bash to execute it.

However, the busybox that docker images installs does not ship bash but sh, so when a task is launched by middle manager, following exception is thrown.

middlemanager    | java.io.IOException: Cannot run program "bin/run-java": error=2, No such file or directory
middlemanager    |      at java.lang.ProcessBuilder.start(ProcessBuilder.java:1128) ~[?:?]
middlemanager    |      at java.lang.ProcessBuilder.start(ProcessBuilder.java:1071) ~[?:?]
middlemanager    |      at org.apache.druid.indexing.overlord.ForkingTaskRunner.runTaskProcess(ForkingTaskRunner.java:491) ~[druid-indexing-service-25.0.0-SNAPSHOT.jar:25.0.0-SNAPSHOT]
middlemanager    |      at org.apache.druid.indexing.overlord.ForkingTaskRunner$1.call(ForkingTaskRunner.java:390) ~[druid-indexing-service-25.0.0-SNAPSHOT.jar:25.0.0-SNAPSHOT]
middlemanager    |      at org.apache.druid.indexing.overlord.ForkingTaskRunner$1.call(ForkingTaskRunner.java:153) ~[druid-indexing-service-25.0.0-SNAPSHOT.jar:25.0.0-SNAPSHOT]
middlemanager    |      at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
middlemanager    |      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[?:?]
middlemanager    |      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[?:?]
middlemanager    |      at java.lang.Thread.run(Thread.java:829) ~[?:?]
middlemanager    | Caused by: java.io.IOException: error=2, No such file or directory
middlemanager    |      at java.lang.ProcessImpl.forkAndExec(Native Method) ~[?:?]
middlemanager    |      at java.lang.ProcessImpl.<init>(ProcessImpl.java:340) ~[?:?]
middlemanager    |      at java.lang.ProcessImpl.start(ProcessImpl.java:271) ~[?:?]
middlemanager    |      at java.lang.ProcessBuilder.start(ProcessBuilder.java:1107) ~[?:?]

The solution is:

1. replace the directive of #!/bin/bash -eu of run-java file to #!/bin/sh
2. Or install bash to docker

I think the 2nd alternative is better.

[FrankChen021]

24.0.0 is also affected

[FrankChen021]

Actually, the startup script druid.sh in docker is declared using sh

druid/distribution/docker/druid.sh

Line 1 in 99fd22c

#!/bin/sh