56ee90c598
The locations for native-toolchain packages in IMPALA_TOOLCHAIN currently do not include the compiler version. This means that the toolchain can't distinguish between native-toolchain packages built with gcc 4.9.2 versus gcc 7.5.0. The collisions can cause issues when switching back and forth between branches. This introduces the IMPALA_TOOLCHAIN_PACKAGES_HOME environment variable, which is a location inside IMPALA_TOOLCHAIN that would hold native-toolchain packages. Currently, it is set to the same as IMPALA_TOOLCHAIN, so there is no difference in behavior. This lays the groundwork to add the compiler version to this path when switching to GCC7. Testing: - The only impediment to building with IMPALA_TOOLCHAIN_PACKAGES_HOME=$IMPALA_TOOLCHAIN/test is Impala-lzo. With a custom Impala-lzo, compilation succeeds. Either Impala-lzo will be fixed or it will be removed. - Core tests Change-Id: I1ff641e503b2161baf415355452f86b6c8bfb15b Reviewed-on: http://gerrit.cloudera.org:8080/15991 Reviewed-by: Joe McDonnell <joemcdonnell@cloudera.com> Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Impala Interactive Shell
You can use the Impala shell tool (impala-shell) to connect to an Impala service. The shell allows you to set up databases and tables, insert data, and issue queries. For ad hoc queries and exploration, you can submit SQL statements in an interactive session. The impala-shell interpreter accepts all the same SQL statements listed in Impala SQL Statements, plus some shell-only commands that you can use for tuning performance and diagnosing problems.
To automate your work, you can specify command-line options to process a single statement or a script file. (Other avenues for Impala automation via python are provided by Impyla or ODBC.)
Installing
$ pip install impala-shell
Online documentation
Quickstart
Non-interactive mode
Processing a single query, e.g., show tables:
$ impala-shell -i impalad-host.domain.com -d some_database -q 'show tables'
Processing a text file with a series of queries:
$ impala-shell -i impalad-host.domain.com -d some_database -f /path/to/queries.sql
Launching the interactive shell
To connect to an impalad host at the default service port (21000):
$ impala-shell -i impalad-host.domain.com
Starting Impala Shell without Kerberos authentication
Connected to impalad-host.domain.com:21000
Server version: impalad version 2.11.0-SNAPSHOT RELEASE (build d4596f9ca3ea32a8008cdc809a7ac9a3dea47962)
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Welcome to the Impala shell.
(Impala Shell v3.0.0-SNAPSHOT (73e90d2) built on Thu Mar 8 00:59:00 PST 2018)
The '-B' command line flag turns off pretty-printing for query results. Use this
flag to remove formatting from results you want to save for later, or to benchmark
Impala.
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[impalad-host.domain.com:21000] >
Launching the interactive shell (secure mode)
To connect to a secure host using kerberos and SSL:
$ impala-shell -k --ssl -i impalad-secure-host.domain.com
Disconnecting
To exit the shell when running interactively, press Ctrl-D at the shell prompt.