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add compression for INTO OUTFILE

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This commit is contained in:
Artur 2021-08-03 11:54:37 +00:00
parent 0b5e3ce195
commit a9513f3587
2 changed files with 35 additions and 13 deletions
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13
programs/client/Client.cpp
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@ -197,7 +197,7 @@ private:
std::unique_ptr<ShellCommand> pager_cmd;
/// The user can specify to redirect query output to a file.
std::optional<WriteBufferFromFile> out_file_buf;
std::unique_ptr<WriteBuffer> out_file_buf;
BlockOutputStreamPtr block_out_stream;
/// The user could specify special file for server logs (stderr by default)
@ -2238,8 +2238,11 @@ private:
const auto & out_file_node = query_with_output->out_file->as<ASTLiteral &>();
const auto & out_file = out_file_node.value.safeGet<std::string>();
out_file_buf.emplace(out_file, DBMS_DEFAULT_BUFFER_SIZE, O_WRONLY | O_EXCL | O_CREAT);
out_buf = &*out_file_buf;
out_file_buf = wrapWriteBufferWithCompressionMethod(
std::make_unique<WriteBufferFromFile>(out_file, DBMS_DEFAULT_BUFFER_SIZE, O_WRONLY | O_EXCL | O_CREAT),
chooseCompressionMethod(out_file, ""),
/* compression level = */ 3
);
// We are writing to file, so default format is the same as in non-interactive mode.
if (is_interactive && is_default_format)
@ -2259,9 +2262,9 @@ private:
/// It is not clear how to write progress with parallel formatting. It may increase code complexity significantly.
if (!need_render_progress)
block_out_stream = context->getOutputStreamParallelIfPossible(current_format, *out_buf, block);
block_out_stream = context->getOutputStreamParallelIfPossible(current_format, out_file_buf ? *out_file_buf : *out_buf, block);
else
block_out_stream = context->getOutputStream(current_format, *out_buf, block);
block_out_stream = context->getOutputStream(current_format, out_file_buf ? *out_file_buf : *out_buf, block);
block_out_stream->writePrefix();
}

35
src/Interpreters/executeQuery.cpp
View File

@ -1010,22 +1010,31 @@ void executeQuery(
const auto * ast_query_with_output = dynamic_cast<const ASTQueryWithOutput *>(ast.get());
WriteBuffer * out_buf = &ostr;
std::optional<WriteBufferFromFile> out_file_buf;
std::unique_ptr<WriteBuffer> compressed_buffer;
if (ast_query_with_output && ast_query_with_output->out_file)
{
if (!allow_into_outfile)
throw Exception("INTO OUTFILE is not allowed", ErrorCodes::INTO_OUTFILE_NOT_ALLOWED);
const auto & out_file = ast_query_with_output->out_file->as<ASTLiteral &>().value.safeGet<std::string>();
out_file_buf.emplace(out_file, DBMS_DEFAULT_BUFFER_SIZE, O_WRONLY | O_EXCL | O_CREAT);
out_buf = &*out_file_buf;
compressed_buffer = wrapWriteBufferWithCompressionMethod(
std::make_unique<WriteBufferFromFile>(out_file, DBMS_DEFAULT_BUFFER_SIZE, O_WRONLY | O_EXCL | O_CREAT),
chooseCompressionMethod(out_file, ""),
/* compression level = */ 3
);
}
String format_name = ast_query_with_output && (ast_query_with_output->format != nullptr)
? getIdentifierName(ast_query_with_output->format)
: context->getDefaultFormat();
auto out = FormatFactory::instance().getOutputStreamParallelIfPossible(format_name, *out_buf, streams.in->getHeader(), context, {}, output_format_settings);
auto out = FormatFactory::instance().getOutputStreamParallelIfPossible(
format_name,
compressed_buffer ? *compressed_buffer : *out_buf,
streams.in->getHeader(),
context,
{},
output_format_settings);
/// Save previous progress callback if any. TODO Do it more conveniently.
auto previous_progress_callback = context->getProgressCallback();
@ -1049,15 +1058,18 @@ void executeQuery(
const ASTQueryWithOutput * ast_query_with_output = dynamic_cast<const ASTQueryWithOutput *>(ast.get());
WriteBuffer * out_buf = &ostr;
std::optional<WriteBufferFromFile> out_file_buf;
std::unique_ptr<WriteBuffer> compressed_buffer;
if (ast_query_with_output && ast_query_with_output->out_file)
{
if (!allow_into_outfile)
throw Exception("INTO OUTFILE is not allowed", ErrorCodes::INTO_OUTFILE_NOT_ALLOWED);
const auto & out_file = typeid_cast<const ASTLiteral &>(*ast_query_with_output->out_file).value.safeGet<std::string>();
out_file_buf.emplace(out_file, DBMS_DEFAULT_BUFFER_SIZE, O_WRONLY | O_EXCL | O_CREAT);
out_buf = &*out_file_buf;
compressed_buffer = wrapWriteBufferWithCompressionMethod(
std::make_unique<WriteBufferFromFile>(out_file, DBMS_DEFAULT_BUFFER_SIZE, O_WRONLY | O_EXCL | O_CREAT),
chooseCompressionMethod(out_file, ""),
/* compression level = */ 3
);
}
String format_name = ast_query_with_output && (ast_query_with_output->format != nullptr)
@ -1071,7 +1083,14 @@ void executeQuery(
return std::make_shared<MaterializingTransform>(header);
});
auto out = FormatFactory::instance().getOutputFormatParallelIfPossible(format_name, *out_buf, pipeline.getHeader(), context, {}, output_format_settings);
auto out = FormatFactory::instance().getOutputFormatParallelIfPossible(
format_name,
compressed_buffer ? *compressed_buffer : *out_buf,
pipeline.getHeader(),
context,
{},
output_format_settings);
out->setAutoFlush();
/// Save previous progress callback if any. TODO Do it more conveniently.