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6b769d011d
Adds a bounded query-result cache that clients can enable by setting an 'impala.resultset.cache.size' option in the HS2 confOverlay mapof the HS2 exec request. Impala permits FETCH_FIRST for a particular stmt iff result caching is enabled. FETCH_FIRST will succeed as long all previously fetched rows fit into the bounded result cache. Regardless of whether a FETCH_FIRST succeeds or not, clients may always resume fetching with FETCH_NEXT. The FETCH_FIRST feature is intended to allow HUE users to export an entire result set (to Excel, CSV, etc.) after browsing through a few pages of results, without having ro re-run the query from scratch. Change-Id: I71ab4794ddef30842594c5e1f7bc94724d6ce89f Reviewed-on: http://gerrit.ent.cloudera.com:8080/1356 Reviewed-by: Alex Behm <alex.behm@cloudera.com> Tested-by: jenkins Reviewed-on: http://gerrit.ent.cloudera.com:8080/1406
33 lines
898 B
Thrift
33 lines
898 B
Thrift
// Copyright 2012 Cloudera Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// 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, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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namespace cpp impala
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namespace java com.cloudera.impala.thrift
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enum TStatusCode {
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OK,
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CANCELLED,
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ANALYSIS_ERROR,
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NOT_IMPLEMENTED_ERROR,
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RUNTIME_ERROR,
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MEM_LIMIT_EXCEEDED,
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INTERNAL_ERROR,
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RECOVERABLE_ERROR
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}
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struct TStatus {
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1: required TStatusCode status_code
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2: list<string> error_msgs
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}
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