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This patch leverages the AdlFileSystem in Hadoop to allow Impala to talk to the Azure Data Lake Store. This patch has functional changes as well as adds test infrastructure for testing Impala over ADLS. We do not support ACLs on ADLS since the Hadoop ADLS connector does not integrate ADLS ACLs with Hadoop users/groups. For testing, we use the azure-data-lake-store-python client from Microsoft. This client seems to have some consistency issues. For example, a drop table through Impala will delete the files in ADLS, however, listing that directory through the python client immediately after the drop, will still show the files. This behavior is unexpected since ADLS claims to be strongly consistent. Some tests have been skipped due to this limitation with the tag SkipIfADLS.slow_client. Tracked by IMPALA-5335. The azure-data-lake-store-python client also only works on CentOS 6.6 and over, so the python dependencies for Azure will not be downloaded when the TARGET_FILESYSTEM is not "adls". While running ADLS tests, the expectation will be that it runs on a machine that is at least running CentOS 6.6. Note: This is only a test limitation, not a functional one. Clusters with older OSes like CentOS 6.4 will still work with ADLS. Added another dependency to bootstrap_build.sh for the ADLS Python client. Testing: Ran core tests with and without TARGET_FILESYSTEM as 'adls' to make sure that all tests pass and that nothing breaks. Change-Id: Ic56b9988b32a330443f24c44f9cb2c80842f7542 Reviewed-on: http://gerrit.cloudera.org:8080/6910 Tested-by: Impala Public Jenkins Reviewed-by: Sailesh Mukil <sailesh@cloudera.com>
59 lines
2.3 KiB
Python
59 lines
2.3 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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#
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# Utilities for supporting different filesystems.
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import os
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# FILESYSTEM_PREFIX is the path prefix that should be used in queries. When running
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# the tests against the default filesystem (fs.defaultFS), FILESYSTEM_PREFIX is the
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# empty string. When running against a secondary filesystem, it will be the scheme
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# and authority portion of the qualified path.
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FILESYSTEM_PREFIX = os.getenv("FILESYSTEM_PREFIX") or str()
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SECONDARY_FILESYSTEM = os.getenv("SECONDARY_FILESYSTEM") or str()
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FILESYSTEM = os.getenv("TARGET_FILESYSTEM")
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IS_S3 = FILESYSTEM == "s3"
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IS_ISILON = FILESYSTEM == "isilon"
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IS_LOCAL = FILESYSTEM == "local"
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IS_HDFS = FILESYSTEM == "hdfs"
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IS_ADLS = FILESYSTEM == "adls"
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# This condition satisfies both the states where one can assume a default fs
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# - The environment variable is set to an empty string.
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# - Tne environment variables is unset ( None )
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# When the local filesystem is used, it should always be the default filesystem.
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IS_DEFAULT_FS = not FILESYSTEM_PREFIX or IS_LOCAL
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# Isilon specific values.
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ISILON_NAMENODE = os.getenv("ISILON_NAMENODE") or str()
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ISILON_WEBHDFS_PORT = 8082
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# S3 specific values
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S3_BUCKET_NAME = os.getenv("S3_BUCKET")
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# ADLS specific values
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ADLS_STORE_NAME = os.getenv("azure_data_lake_store_name")
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ADLS_CLIENT_ID = os.getenv("azure_client_id")
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ADLS_TENANT_ID = os.getenv("azure_tenant_id")
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ADLS_CLIENT_SECRET = os.getenv("azure_client_secret")
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def get_fs_path(path):
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return "%s%s" % (FILESYSTEM_PREFIX, path)
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def get_secondary_fs_path(path):
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return "%s%s" % (SECONDARY_FILESYSTEM, path)
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WAREHOUSE = get_fs_path('/test-warehouse')
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