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https://issues.apache.org/jira/browse/HBASE-16044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15354089#comment-15354089
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Appy commented on HBASE-16044:
------------------------------
Reverted those changes from branch-1.
Submitted patch to fix this issue in master.
Following output shows difference between interactive/non-interactive for a
simple command like balance_switch.
Interactive
{noformat}
hbase(main):003:0> balance_switch true
Previous balancer state : true
Took 0.0210 seconds
hbase(main):004:0> balance_switch false
Previous balancer state : true
Took 0.0130 seconds
{noformat}
Non-interactive output. Note the last line returning raw (unformatted) output
which in this case is simple true/false string.
{noformat}
~/apache/hbase (HBASE-16044) → echo "balance_switch true" | ./bin/hbase shell
-n
2016-06-28 18:23:12,930 WARN [main] util.NativeCodeLoader: Unable to load
native-hadoop library for your platform... using builtin-java classes where
applicable
Previous balancer state : false
Took 0.3890 seconds
false
~/apache/hbase (HBASE-16044) → echo "balance_switch true" | ./bin/hbase shell
-n
2016-06-28 18:23:22,528 WARN [main] util.NativeCodeLoader: Unable to load
native-hadoop library for your platform... using builtin-java classes where
applicable
Previous balancer state : true
Took 0.3830 seconds
true
{noformat}
> Fix 'hbase shell' output parsing in graceful_stop.sh
> ----------------------------------------------------
>
> Key: HBASE-16044
> URL: https://issues.apache.org/jira/browse/HBASE-16044
> Project: HBase
> Issue Type: Bug
> Components: scripts
> Affects Versions: 2.0.0
> Reporter: Samir Ahmic
> Assignee: Samir Ahmic
> Priority: Critical
> Fix For: 2.0.0
>
> Attachments: HBASE-16044.master.001.patch
>
>
> In some of our bash scripts we are piping command in hbase shell and then
> parsing response to define variables. Since 'hbase shell' output format is
> changed we are picking wrong values from output Here is example form
> gracful_stop.sh:
> {code}
> HBASE_BALANCER_STATE=$(echo 'balance_switch false' | "$bin"/hbase --config
> "${HBASE_CONF_DIR}" shell | tail -3 | head -1)
> {code}
> this will return "balance_switch true" instead of previous balancer state.
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