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From "Tianyi Wang (Code Review)" <>
Subject [Impala-ASF-CR] IMPALA-992: Rerun past queries from history in shell
Date Tue, 22 Aug 2017 23:07:27 GMT
Hello Lars Volker, Sailesh Mukil,

I'd like you to reexamine a change.  Please visit

to look at the new patch set (#10).

Change subject: IMPALA-992: Rerun past queries from history in shell

IMPALA-992: Rerun past queries from history in shell

This patch adds a new command "rerun" and a shortcut "@" to impala-shell
. Users can rerun a certain query by its index given by history command.
A valid index is an integer in [1, history_length] or
[-history_length, -1]. Negative values index history in reverse order.
For example, "@1;" or "rerun 1;" reruns the first query shown in history
and "@-1;" reruns the last query. The rerun command itself won't appear
in history. The history index is 1-based and increasing. Old entries
might be truncated when impala-shell starts, and the indexes will be
realigned to 1, so the same index may refer to different commands among
multiple impala-shell instances.

Testing: A test case test_rerun is added to

Change-Id: Ifc28e8ce07845343267224c3b9ccb71b29a524d2
M shell/
M tests/shell/
2 files changed, 81 insertions(+), 4 deletions(-)

  git pull ssh:// refs/changes/74/7674/10
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Ifc28e8ce07845343267224c3b9ccb71b29a524d2
Gerrit-PatchSet: 10
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Tianyi Wang <>
Gerrit-Reviewer: Lars Volker <>
Gerrit-Reviewer: Michael Brown <>
Gerrit-Reviewer: Sailesh Mukil <>
Gerrit-Reviewer: Tianyi Wang <>

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