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<div class="title">impala::DiskIoMgr::RequestRange Class Reference</div> </div>
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<p><code>#include &lt;<a class="el" href="disk-io-mgr_8h_source.html">disk-io-mgr.h</a>&gt;</code></p>
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Inheritance diagram for impala::DiskIoMgr::RequestRange:</div>
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Collaboration diagram for impala::DiskIoMgr::RequestRange:</div>
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<table class="memberdecls">
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Public Member Functions</h2></td></tr>
<tr class="memitem:ac324726e966f9430196abcdbabd4e907"><td class="memItemLeft" align="right" valign="top">hdfsFS&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1DiskIoMgr_1_1RequestRange.html#ac324726e966f9430196abcdbabd4e907">fs</a> () const </td></tr>
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<tr class="memitem:a015237297a1c06eca646fe3370f0e8b9"><td class="memItemLeft" align="right" valign="top">const char *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1DiskIoMgr_1_1RequestRange.html#a015237297a1c06eca646fe3370f0e8b9">file</a> () const </td></tr>
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<tr class="memitem:aae6c216cb57b76594b0a107555a11ceb"><td class="memItemLeft" align="right" valign="top">int64_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1DiskIoMgr_1_1RequestRange.html#aae6c216cb57b76594b0a107555a11ceb">offset</a> () const </td></tr>
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<tr class="memitem:a54e2b168c3a64a9250cac5069f85435d"><td class="memItemLeft" align="right" valign="top">int64_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1DiskIoMgr_1_1RequestRange.html#a54e2b168c3a64a9250cac5069f85435d">len</a> () const </td></tr>
<tr class="separator:a54e2b168c3a64a9250cac5069f85435d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a5b5c378a1ec75719e7ead0fdd6fb2137"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1DiskIoMgr_1_1RequestRange.html#a5b5c378a1ec75719e7ead0fdd6fb2137">disk_id</a> () const </td></tr>
<tr class="separator:a5b5c378a1ec75719e7ead0fdd6fb2137"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a810f24a718847f2baa96100914e0ae51"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structimpala_1_1DiskIoMgr_1_1RequestType.html#a9f42b7fd29382e30bae0bed0cefc7153">RequestType::type</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1DiskIoMgr_1_1RequestRange.html#a810f24a718847f2baa96100914e0ae51">request_type</a> () const </td></tr>
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<tr class="memitem:a509c8676cbcf1c4a1aea4075c3c469c7"><td class="memItemLeft" align="right" valign="top">T *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structimpala_1_1InternalQueue_1_1Node.html#a509c8676cbcf1c4a1aea4075c3c469c7">Next</a> () const </td></tr>
<tr class="memdesc:a509c8676cbcf1c4a1aea4075c3c469c7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the Next/Prev node or NULL if this is the end/front. <a href="#a509c8676cbcf1c4a1aea4075c3c469c7">More...</a><br/></td></tr>
<tr class="separator:a509c8676cbcf1c4a1aea4075c3c469c7"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a4ed10cff8d74c3d63f3235ad6a29dcd2"><td class="memItemLeft" align="right" valign="top">T *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structimpala_1_1InternalQueue_1_1Node.html#a4ed10cff8d74c3d63f3235ad6a29dcd2">Prev</a> () const </td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-attribs"></a>
Protected Attributes</h2></td></tr>
<tr class="memitem:adb8c41a4455d2428ae01510d0640d6ff"><td class="memItemLeft" align="right" valign="top">hdfsFS&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1DiskIoMgr_1_1RequestRange.html#adb8c41a4455d2428ae01510d0640d6ff">fs_</a></td></tr>
<tr class="memdesc:adb8c41a4455d2428ae01510d0640d6ff"><td class="mdescLeft">&#160;</td><td class="mdescRight">Hadoop filesystem that contains file_, or set to NULL for local filesystem. <a href="#adb8c41a4455d2428ae01510d0640d6ff">More...</a><br/></td></tr>
<tr class="separator:adb8c41a4455d2428ae01510d0640d6ff"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a261c8db8366b023bd76e15c1549e74d0"><td class="memItemLeft" align="right" valign="top">std::string&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1DiskIoMgr_1_1RequestRange.html#a261c8db8366b023bd76e15c1549e74d0">file_</a></td></tr>
<tr class="memdesc:a261c8db8366b023bd76e15c1549e74d0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Path to file being read or written. <a href="#a261c8db8366b023bd76e15c1549e74d0">More...</a><br/></td></tr>
<tr class="separator:a261c8db8366b023bd76e15c1549e74d0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a322bf955c04727d26253584f05f7c27f"><td class="memItemLeft" align="right" valign="top">int64_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1DiskIoMgr_1_1RequestRange.html#a322bf955c04727d26253584f05f7c27f">offset_</a></td></tr>
<tr class="memdesc:a322bf955c04727d26253584f05f7c27f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Offset within file_ being read or written. <a href="#a322bf955c04727d26253584f05f7c27f">More...</a><br/></td></tr>
<tr class="separator:a322bf955c04727d26253584f05f7c27f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9e03101c90a31cb522e9f44b008ce9f2"><td class="memItemLeft" align="right" valign="top">int64_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1DiskIoMgr_1_1RequestRange.html#a9e03101c90a31cb522e9f44b008ce9f2">len_</a></td></tr>
<tr class="memdesc:a9e03101c90a31cb522e9f44b008ce9f2"><td class="mdescLeft">&#160;</td><td class="mdescRight">Length of data read or written. <a href="#a9e03101c90a31cb522e9f44b008ce9f2">More...</a><br/></td></tr>
<tr class="separator:a9e03101c90a31cb522e9f44b008ce9f2"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9c4ffc24f68349da818a4c0519c0e792"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1DiskIoMgr_1_1RequestRange.html#a9c4ffc24f68349da818a4c0519c0e792">disk_id_</a></td></tr>
<tr class="memdesc:a9c4ffc24f68349da818a4c0519c0e792"><td class="mdescLeft">&#160;</td><td class="mdescRight">Id of disk containing file_;. <a href="#a9c4ffc24f68349da818a4c0519c0e792">More...</a><br/></td></tr>
<tr class="separator:a9c4ffc24f68349da818a4c0519c0e792"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0b8ff464b55bf723767102e4e0bd2c64"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structimpala_1_1DiskIoMgr_1_1RequestType.html#a9f42b7fd29382e30bae0bed0cefc7153">RequestType::type</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1DiskIoMgr_1_1RequestRange.html#a0b8ff464b55bf723767102e4e0bd2c64">request_type_</a></td></tr>
<tr class="memdesc:a0b8ff464b55bf723767102e4e0bd2c64"><td class="mdescLeft">&#160;</td><td class="mdescRight">The type of IO request, READ or WRITE. <a href="#a0b8ff464b55bf723767102e4e0bd2c64">More...</a><br/></td></tr>
<tr class="separator:a0b8ff464b55bf723767102e4e0bd2c64"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Represents a contiguous sequence of bytes in a single file. This is the common base class for read and write IO requests - <a class="el" href="classimpala_1_1DiskIoMgr_1_1ScanRange.html">ScanRange</a> and <a class="el" href="classimpala_1_1DiskIoMgr_1_1WriteRange.html">WriteRange</a>. Each disk thread processes exactly one <a class="el" href="classimpala_1_1DiskIoMgr_1_1RequestRange.html">RequestRange</a> at a time. </p>
<p>Definition at line <a class="el" href="disk-io-mgr_8h_source.html#l00263">263</a> of file <a class="el" href="disk-io-mgr_8h_source.html">disk-io-mgr.h</a>.</p>
</div><h2 class="groupheader">Member Function Documentation</h2>
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<td class="memname">int impala::DiskIoMgr::RequestRange::disk_id </td>
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<td> const</td>
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<p>Definition at line <a class="el" href="disk-io-mgr_8h_source.html#l00269">269</a> of file <a class="el" href="disk-io-mgr_8h_source.html">disk-io-mgr.h</a>.</p>
<p>References <a class="el" href="disk-io-mgr_8h_source.html#l00286">disk_id_</a>.</p>
<p>Referenced by <a class="el" href="disk-io-mgr-reader-context_8cc_source.html#l00091">impala::DiskIoMgr::RequestContext::AddRequestRange()</a>, <a class="el" href="hdfs-parquet-scanner_8cc_source.html#l01093">impala::HdfsParquetScanner::InitColumns()</a>, <a class="el" href="hdfs-text-scanner_8cc_source.html#l00067">impala::HdfsTextScanner::IssueInitialRanges()</a>, <a class="el" href="hdfs-parquet-scanner_8cc_source.html#l00083">impala::HdfsParquetScanner::IssueInitialRanges()</a>, <a class="el" href="buffered-block-mgr_8cc_source.html#l00536">impala::BufferedBlockMgr::PinBlock()</a>, <a class="el" href="hdfs-parquet-scanner_8cc_source.html#l00916">impala::HdfsParquetScanner::ProcessFooter()</a>, and <a class="el" href="disk-io-mgr-internal_8h_source.html#l00165">impala::DiskIoMgr::RequestContext::ScheduleScanRange()</a>.</p>
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<td class="memname">const char* impala::DiskIoMgr::RequestRange::file </td>
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<td> const</td>
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<p>Definition at line <a class="el" href="disk-io-mgr_8h_source.html#l00266">266</a> of file <a class="el" href="disk-io-mgr_8h_source.html">disk-io-mgr.h</a>.</p>
<p>References <a class="el" href="disk-io-mgr_8h_source.html#l00277">file_</a>.</p>
<p>Referenced by <a class="el" href="scanner-context_8h_source.html#l00118">impala::ScannerContext::Stream::filename()</a>, <a class="el" href="hdfs-parquet-scanner_8cc_source.html#l01093">impala::HdfsParquetScanner::InitColumns()</a>, <a class="el" href="buffered-block-mgr_8cc_source.html#l00536">impala::BufferedBlockMgr::PinBlock()</a>, <a class="el" href="hdfs-parquet-scanner_8cc_source.html#l00916">impala::HdfsParquetScanner::ProcessFooter()</a>, <a class="el" href="hdfs-scan-node_8cc_source.html#l00797">impala::HdfsScanNode::ScannerThread()</a>, <a class="el" href="hdfs-parquet-scanner_8cc_source.html#l01290">impala::HdfsParquetScanner::ValidateColumn()</a>, and <a class="el" href="disk-io-mgr_8cc_source.html#l01041">impala::DiskIoMgr::Write()</a>.</p>
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<td class="memname">hdfsFS impala::DiskIoMgr::RequestRange::fs </td>
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<p>Definition at line <a class="el" href="disk-io-mgr_8h_source.html#l00265">265</a> of file <a class="el" href="disk-io-mgr_8h_source.html">disk-io-mgr.h</a>.</p>
<p>References <a class="el" href="disk-io-mgr_8h_source.html#l00274">fs_</a>.</p>
<p>Referenced by <a class="el" href="hdfs-parquet-scanner_8cc_source.html#l01093">impala::HdfsParquetScanner::InitColumns()</a>, and <a class="el" href="hdfs-parquet-scanner_8cc_source.html#l00916">impala::HdfsParquetScanner::ProcessFooter()</a>.</p>
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<td class="memname">int64_t impala::DiskIoMgr::RequestRange::len </td>
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<td class="paramname"></td><td>)</td>
<td> const</td>
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<p>Definition at line <a class="el" href="disk-io-mgr_8h_source.html#l00268">268</a> of file <a class="el" href="disk-io-mgr_8h_source.html">disk-io-mgr.h</a>.</p>
<p>References <a class="el" href="disk-io-mgr_8h_source.html#l00283">len_</a>.</p>
<p>Referenced by <a class="el" href="disk-io-mgr_8cc_source.html#l01103">impala::DiskIoMgr::AddWriteRange()</a>, <a class="el" href="scanner-context_8h_source.html#l00109">impala::ScannerContext::Stream::bytes_left()</a>, <a class="el" href="scanner-context_8h_source.html#l00113">impala::ScannerContext::Stream::eosr()</a>, <a class="el" href="buffered-block-mgr_8cc_source.html#l00536">impala::BufferedBlockMgr::PinBlock()</a>, <a class="el" href="disk-io-mgr_8cc_source.html#l00555">impala::DiskIoMgr::Read()</a>, <a class="el" href="hdfs-scan-node_8cc_source.html#l00797">impala::HdfsScanNode::ScannerThread()</a>, and <a class="el" href="disk-io-mgr-test_8cc_source.html#l00103">impala::DiskIoMgrTest::ValidateSyncRead()</a>.</p>
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<p>Returns the Next/Prev node or NULL if this is the end/front. </p>
<p>Definition at line <a class="el" href="internal-queue_8h_source.html#l00048">48</a> of file <a class="el" href="internal-queue_8h_source.html">internal-queue.h</a>.</p>
<p>References <a class="el" href="internal-queue_8h_source.html#l00251">impala::InternalQueue&lt; T &gt;::lock_</a>, <a class="el" href="internal-queue_8h_source.html#l00062">impala::InternalQueue&lt; T &gt;::Node::next</a>, and <a class="el" href="internal-queue_8h_source.html#l00061">impala::InternalQueue&lt; T &gt;::Node::parent_queue</a>.</p>
<p>Referenced by <a class="el" href="internal-queue-test_8cc_source.html#l00034">impala::TEST()</a>, and <a class="el" href="buffered-block-mgr_8cc_source.html#l00995">impala::BufferedBlockMgr::Validate()</a>.</p>
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<td class="memname">int64_t impala::DiskIoMgr::RequestRange::offset </td>
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<p>Definition at line <a class="el" href="disk-io-mgr_8h_source.html#l00267">267</a> of file <a class="el" href="disk-io-mgr_8h_source.html">disk-io-mgr.h</a>.</p>
<p>References <a class="el" href="disk-io-mgr_8h_source.html#l00280">offset_</a>.</p>
<p>Referenced by <a class="el" href="disk-io-mgr-stress_8cc_source.html#l00094">impala::DiskIoMgrStress::ClientThread()</a>, <a class="el" href="scanner-context_8h_source.html#l00123">impala::ScannerContext::Stream::file_offset()</a>, <a class="el" href="hdfs-text-scanner_8cc_source.html#l00577">impala::HdfsTextScanner::FindFirstTuple()</a>, <a class="el" href="hdfs-text-scanner_8cc_source.html#l00067">impala::HdfsTextScanner::IssueInitialRanges()</a>, <a class="el" href="hdfs-parquet-scanner_8cc_source.html#l00083">impala::HdfsParquetScanner::IssueInitialRanges()</a>, <a class="el" href="buffered-block-mgr_8cc_source.html#l00536">impala::BufferedBlockMgr::PinBlock()</a>, <a class="el" href="hdfs-scan-node_8cc_source.html#l00797">impala::HdfsScanNode::ScannerThread()</a>, <a class="el" href="disk-io-mgr-test_8cc_source.html#l00626">impala::TEST_F()</a>, <a class="el" href="disk-io-mgr-test_8cc_source.html#l00116">impala::DiskIoMgrTest::ValidateScanRange()</a>, and <a class="el" href="disk-io-mgr_8cc_source.html#l01061">impala::DiskIoMgr::WriteRangeHelper()</a>.</p>
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<p>Definition at line <a class="el" href="internal-queue_8h_source.html#l00052">52</a> of file <a class="el" href="internal-queue_8h_source.html">internal-queue.h</a>.</p>
<p>References <a class="el" href="internal-queue_8h_source.html#l00251">impala::InternalQueue&lt; T &gt;::lock_</a>, <a class="el" href="internal-queue_8h_source.html#l00061">impala::InternalQueue&lt; T &gt;::Node::parent_queue</a>, and <a class="el" href="internal-queue_8h_source.html#l00063">impala::InternalQueue&lt; T &gt;::Node::prev</a>.</p>
<p>Referenced by <a class="el" href="internal-queue-test_8cc_source.html#l00034">impala::TEST()</a>.</p>
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<td class="memname"><a class="el" href="structimpala_1_1DiskIoMgr_1_1RequestType.html#a9f42b7fd29382e30bae0bed0cefc7153">RequestType::type</a> impala::DiskIoMgr::RequestRange::request_type </td>
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<p>Definition at line <a class="el" href="disk-io-mgr_8h_source.html#l00270">270</a> of file <a class="el" href="disk-io-mgr_8h_source.html">disk-io-mgr.h</a>.</p>
<p>References <a class="el" href="disk-io-mgr_8h_source.html#l00289">request_type_</a>.</p>
<p>Referenced by <a class="el" href="disk-io-mgr-reader-context_8cc_source.html#l00091">impala::DiskIoMgr::RequestContext::AddRequestRange()</a>, <a class="el" href="disk-io-mgr-reader-context_8cc_source.html#l00021">impala::DiskIoMgr::RequestContext::Cancel()</a>, and <a class="el" href="disk-io-mgr_8cc_source.html#l00920">impala::DiskIoMgr::WorkLoop()</a>.</p>
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<h2 class="groupheader">Member Data Documentation</h2>
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<td class="memname">int impala::DiskIoMgr::RequestRange::disk_id_</td>
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<p>Id of disk containing file_;. </p>
<p>Definition at line <a class="el" href="disk-io-mgr_8h_source.html#l00286">286</a> of file <a class="el" href="disk-io-mgr_8h_source.html">disk-io-mgr.h</a>.</p>
<p>Referenced by <a class="el" href="disk-io-mgr_8h_source.html#l00269">disk_id()</a>, <a class="el" href="disk-io-mgr_8cc_source.html#l00845">impala::DiskIoMgr::HandleWriteFinished()</a>, and <a class="el" href="disk-io-mgr_8cc_source.html#l00444">impala::DiskIoMgr::ValidateScanRange()</a>.</p>
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<td class="memname">std::string impala::DiskIoMgr::RequestRange::file_</td>
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<p>Path to file being read or written. </p>
<p>Definition at line <a class="el" href="disk-io-mgr_8h_source.html#l00277">277</a> of file <a class="el" href="disk-io-mgr_8h_source.html">disk-io-mgr.h</a>.</p>
<p>Referenced by <a class="el" href="disk-io-mgr_8h_source.html#l00266">file()</a>, <a class="el" href="disk-io-mgr_8cc_source.html#l01041">impala::DiskIoMgr::Write()</a>, and <a class="el" href="disk-io-mgr_8cc_source.html#l01061">impala::DiskIoMgr::WriteRangeHelper()</a>.</p>
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<td class="memname">hdfsFS impala::DiskIoMgr::RequestRange::fs_</td>
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<p>Hadoop filesystem that contains file_, or set to NULL for local filesystem. </p>
<p>Definition at line <a class="el" href="disk-io-mgr_8h_source.html#l00274">274</a> of file <a class="el" href="disk-io-mgr_8h_source.html">disk-io-mgr.h</a>.</p>
<p>Referenced by <a class="el" href="disk-io-mgr_8h_source.html#l00265">fs()</a>.</p>
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<td class="memname">int64_t impala::DiskIoMgr::RequestRange::len_</td>
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<p>Length of data read or written. </p>
<p>Definition at line <a class="el" href="disk-io-mgr_8h_source.html#l00283">283</a> of file <a class="el" href="disk-io-mgr_8h_source.html">disk-io-mgr.h</a>.</p>
<p>Referenced by <a class="el" href="disk-io-mgr_8h_source.html#l00268">len()</a>, <a class="el" href="disk-io-mgr_8cc_source.html#l00954">impala::DiskIoMgr::ReadRange()</a>, and <a class="el" href="disk-io-mgr_8cc_source.html#l01061">impala::DiskIoMgr::WriteRangeHelper()</a>.</p>
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<p>Offset within file_ being read or written. </p>
<p>Definition at line <a class="el" href="disk-io-mgr_8h_source.html#l00280">280</a> of file <a class="el" href="disk-io-mgr_8h_source.html">disk-io-mgr.h</a>.</p>
<p>Referenced by <a class="el" href="disk-io-mgr_8h_source.html#l00267">offset()</a>.</p>
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<td class="memname"><a class="el" href="structimpala_1_1DiskIoMgr_1_1RequestType.html#a9f42b7fd29382e30bae0bed0cefc7153">RequestType::type</a> impala::DiskIoMgr::RequestRange::request_type_</td>
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<p>The type of IO request, READ or WRITE. </p>
<p>Definition at line <a class="el" href="disk-io-mgr_8h_source.html#l00289">289</a> of file <a class="el" href="disk-io-mgr_8h_source.html">disk-io-mgr.h</a>.</p>
<p>Referenced by <a class="el" href="disk-io-mgr_8h_source.html#l00270">request_type()</a>, and <a class="el" href="disk-io-mgr-scan-range_8cc_source.html#l00204">impala::DiskIoMgr::ScanRange::ScanRange()</a>.</p>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li>be/src/runtime/<a class="el" href="disk-io-mgr_8h_source.html">disk-io-mgr.h</a></li>
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