ddanielr opened a new pull request, #5221:
URL: https://github.com/apache/accumulo/pull/5221
When the shell is being used with an execute command and pipe `./accumulo
shell -e '<command>' | grep "<>"`,
jline does not write the output on stdout and instead writes it to stderr.
This causes frustration when attempting to script actions using the accumulo
shell.
Without Property Set:
```
$ ./accumulo shell -e 'scan -t accumulo.root -np' | grep localhost
2024-12-31T05:15:59,532 [shell.Shell] INFO : Loading configuration from
/workspace/fluo-uno/install/accumulo-2.1.3/conf/accumulo-client.properties
!0;~ file:hdfs://localhost:8020/accumulo/tables/!0/table_info/0_1.rf []
0,0
!0;~ loc:10000501ae30004 [] localhost:9997
!0;~ srv:dir [] table_info
!0;~ srv:flush [] 4
!0;~ srv:lock []
tservers/localhost:9997/zlock#d923681f-93ab-498f-b32e-0abf799b8354#0000000000$10000501ae30004
!0;~ srv:time [] L0
!0;~ ~tab:~pr [] \x00
!0< loc:10000501ae30004 [] localhost:9997
!0< srv:dir [] default_tablet
!0< srv:flush [] 4
!0< srv:lock []
tservers/localhost:9997/zlock#d923681f-93ab-498f-b32e-0abf799b8354#0000000000$10000501ae30004
!0< srv:time [] L0
!0< ~tab:~pr [] \x01~
```
With Property Set:
```
$ ./accumulo shell -e 'scan -t accumulo.root -np' | grep localhost
!0;~ file:hdfs://localhost:8020/accumulo/tables/!0/table_info/0_1.rf []
0,0
!0;~ loc:10000501ae30004 [] localhost:9997
!0;~ srv:lock []
tservers/localhost:9997/zlock#d923681f-93ab-498f-b32e-0abf799b8354#0000000000$10000501ae30004
!0< loc:10000501ae30004 [] localhost:9997
!0< srv:lock []
tservers/localhost:9997/zlock#d923681f-93ab-498f-b32e-0abf799b8354#0000000000$10000501ae30004
```
What made this odd was that the shell writes to stdout if not using a pipe
`|` as redirecting the output to a file works
`/accumulo shell -e '<command>' > output.txt`
Related Jline Code:
https://github.com/jline/jline3/blob/c75301facc8716b59c1d57d3e3c5943358022560/terminal/src/main/java/org/jline/terminal/TerminalBuilder.java#L541
https://github.com/jline/jline3/blob/c75301facc8716b59c1d57d3e3c5943358022560/terminal/src/main/java/org/jline/terminal/TerminalBuilder.java#L588
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