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Posted to commits@omid.apache.org by oh...@apache.org on 2018/09/20 07:47:52 UTC
[07/51] [partial] incubator-omid-site git commit: [wagon-git] commit
to branch asf-site 9/20/18 10:47 AM
http://git-wip-us.apache.org/repos/asf/incubator-omid-site/blob/6826ad03/xref/org/apache/omid/transaction/SnapshotFilterImpl.html
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+<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
+<title>SnapshotFilterImpl xref</title>
+<link type="text/css" rel="stylesheet" href="../../../../stylesheet.css" />
+</head>
+<body>
+<div id="overview"><a href="../../../../../../target/site/apidocs/org/apache/omid/transaction/SnapshotFilterImpl.html">View Javadoc</a></div><pre>
+
+<a class="jxr_linenumber" name="1" href="#1">1</a> <em class="jxr_comment">/*</em>
+<a class="jxr_linenumber" name="2" href="#2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one</em>
+<a class="jxr_linenumber" name="3" href="#3">3</a> <em class="jxr_comment"> * or more contributor license agreements. See the NOTICE file</em>
+<a class="jxr_linenumber" name="4" href="#4">4</a> <em class="jxr_comment"> * distributed with this work for additional information</em>
+<a class="jxr_linenumber" name="5" href="#5">5</a> <em class="jxr_comment"> * regarding copyright ownership. The ASF licenses this file</em>
+<a class="jxr_linenumber" name="6" href="#6">6</a> <em class="jxr_comment"> * to you under the Apache License, Version 2.0 (the</em>
+<a class="jxr_linenumber" name="7" href="#7">7</a> <em class="jxr_comment"> * "License"); you may not use this file except in compliance</em>
+<a class="jxr_linenumber" name="8" href="#8">8</a> <em class="jxr_comment"> * with the License. You may obtain a copy of the License at</em>
+<a class="jxr_linenumber" name="9" href="#9">9</a> <em class="jxr_comment"> *</em>
+<a class="jxr_linenumber" name="10" href="#10">10</a> <em class="jxr_comment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
+<a class="jxr_linenumber" name="11" href="#11">11</a> <em class="jxr_comment"> *</em>
+<a class="jxr_linenumber" name="12" href="#12">12</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
+<a class="jxr_linenumber" name="13" href="#13">13</a> <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
+<a class="jxr_linenumber" name="14" href="#14">14</a> <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
+<a class="jxr_linenumber" name="15" href="#15">15</a> <em class="jxr_comment"> * See the License for the specific language governing permissions and</em>
+<a class="jxr_linenumber" name="16" href="#16">16</a> <em class="jxr_comment"> * limitations under the License.</em>
+<a class="jxr_linenumber" name="17" href="#17">17</a> <em class="jxr_comment"> */</em>
+<a class="jxr_linenumber" name="18" href="#18">18</a> <strong class="jxr_keyword">package</strong> org.apache.omid.transaction;
+<a class="jxr_linenumber" name="19" href="#19">19</a>
+<a class="jxr_linenumber" name="20" href="#20">20</a> <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.apache.omid.committable.CommitTable.CommitTimestamp.Location.CACHE;
+<a class="jxr_linenumber" name="21" href="#21">21</a> <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.apache.omid.committable.CommitTable.CommitTimestamp.Location.COMMIT_TABLE;
+<a class="jxr_linenumber" name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.apache.omid.committable.CommitTable.CommitTimestamp.Location.NOT_PRESENT;
+<a class="jxr_linenumber" name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.apache.omid.committable.CommitTable.CommitTimestamp.Location.SHADOW_CELL;
+<a class="jxr_linenumber" name="24" href="#24">24</a>
+<a class="jxr_linenumber" name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> java.io.IOException;
+<a class="jxr_linenumber" name="26" href="#26">26</a> <strong class="jxr_keyword">import</strong> java.util.ArrayList;
+<a class="jxr_linenumber" name="27" href="#27">27</a> <strong class="jxr_keyword">import</strong> java.util.Collection;
+<a class="jxr_linenumber" name="28" href="#28">28</a> <strong class="jxr_keyword">import</strong> java.util.Collections;
+<a class="jxr_linenumber" name="29" href="#29">29</a> <strong class="jxr_keyword">import</strong> java.util.HashMap;
+<a class="jxr_linenumber" name="30" href="#30">30</a> <strong class="jxr_keyword">import</strong> java.util.Iterator;
+<a class="jxr_linenumber" name="31" href="#31">31</a> <strong class="jxr_keyword">import</strong> java.util.List;
+<a class="jxr_linenumber" name="32" href="#32">32</a> <strong class="jxr_keyword">import</strong> java.util.Map;
+<a class="jxr_linenumber" name="33" href="#33">33</a> <strong class="jxr_keyword">import</strong> java.util.concurrent.ExecutionException;
+<a class="jxr_linenumber" name="34" href="#34">34</a>
+<a class="jxr_linenumber" name="35" href="#35">35</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.Cell;
+<a class="jxr_linenumber" name="36" href="#36">36</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.CellUtil;
+<a class="jxr_linenumber" name="37" href="#37">37</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.KeyValue;
+<a class="jxr_linenumber" name="38" href="#38">38</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.client.Get;
+<a class="jxr_linenumber" name="39" href="#39">39</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.client.Put;
+<a class="jxr_linenumber" name="40" href="#40">40</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.client.Result;
+<a class="jxr_linenumber" name="41" href="#41">41</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.client.ResultScanner;
+<a class="jxr_linenumber" name="42" href="#42">42</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.client.Scan;
+<a class="jxr_linenumber" name="43" href="#43">43</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.client.metrics.ScanMetrics;
+<a class="jxr_linenumber" name="44" href="#44">44</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.Bytes;
+<a class="jxr_linenumber" name="45" href="#45">45</a> <strong class="jxr_keyword">import</strong> org.apache.omid.committable.CommitTable;
+<a class="jxr_linenumber" name="46" href="#46">46</a> <strong class="jxr_keyword">import</strong> org.apache.omid.committable.CommitTable.CommitTimestamp;
+<a class="jxr_linenumber" name="47" href="#47">47</a> <strong class="jxr_keyword">import</strong> org.apache.omid.transaction.AbstractTransaction.VisibilityLevel;
+<a class="jxr_linenumber" name="48" href="#48">48</a> <strong class="jxr_keyword">import</strong> org.apache.omid.transaction.HBaseTransactionManager.CommitTimestampLocatorImpl;
+<a class="jxr_linenumber" name="49" href="#49">49</a> <strong class="jxr_keyword">import</strong> org.slf4j.Logger;
+<a class="jxr_linenumber" name="50" href="#50">50</a> <strong class="jxr_keyword">import</strong> org.slf4j.LoggerFactory;
+<a class="jxr_linenumber" name="51" href="#51">51</a>
+<a class="jxr_linenumber" name="52" href="#52">52</a> <strong class="jxr_keyword">import</strong> com.google.common.base.Function;
+<a class="jxr_linenumber" name="53" href="#53">53</a> <strong class="jxr_keyword">import</strong> com.google.common.base.Optional;
+<a class="jxr_linenumber" name="54" href="#54">54</a> <strong class="jxr_keyword">import</strong> com.google.common.base.Predicate;
+<a class="jxr_linenumber" name="55" href="#55">55</a> <strong class="jxr_keyword">import</strong> com.google.common.collect.ImmutableList;
+<a class="jxr_linenumber" name="56" href="#56">56</a> <strong class="jxr_keyword">import</strong> com.google.common.collect.Iterables;
+<a class="jxr_linenumber" name="57" href="#57">57</a> <strong class="jxr_keyword">import</strong> com.google.common.collect.Maps;
+<a class="jxr_linenumber" name="58" href="#58">58</a> <strong class="jxr_keyword">import</strong> com.google.common.collect.Multimaps;
+<a class="jxr_linenumber" name="59" href="#59">59</a>
+<a class="jxr_linenumber" name="60" href="#60">60</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/omid/transaction/SnapshotFilterImpl.html">SnapshotFilterImpl</a> <strong class="jxr_keyword">implements</strong> <a href="../../../../org/apache/omid/transaction/SnapshotFilter.html">SnapshotFilter</a> {
+<a class="jxr_linenumber" name="61" href="#61">61</a>
+<a class="jxr_linenumber" name="62" href="#62">62</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> Logger LOG = LoggerFactory.getLogger(SnapshotFilterImpl.<strong class="jxr_keyword">class</strong>);
+<a class="jxr_linenumber" name="63" href="#63">63</a>
+<a class="jxr_linenumber" name="64" href="#64">64</a> <strong class="jxr_keyword">private</strong> <a href="../../../../org/apache/omid/transaction/TableAccessWrapper.html">TableAccessWrapper</a> tableAccessWrapper;
+<a class="jxr_linenumber" name="65" href="#65">65</a>
+<a class="jxr_linenumber" name="66" href="#66">66</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> closeCommitTableClient() <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="67" href="#67">67</a> commitTableClient.close();
+<a class="jxr_linenumber" name="68" href="#68">68</a> }
+<a class="jxr_linenumber" name="69" href="#69">69</a>
+<a class="jxr_linenumber" name="70" href="#70">70</a> <strong class="jxr_keyword">private</strong> CommitTable.Client commitTableClient;
+<a class="jxr_linenumber" name="71" href="#71">71</a>
+<a class="jxr_linenumber" name="72" href="#72">72</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/omid/transaction/TableAccessWrapper.html">TableAccessWrapper</a> getTableAccessWrapper() {
+<a class="jxr_linenumber" name="73" href="#73">73</a> <strong class="jxr_keyword">return</strong> tableAccessWrapper;
+<a class="jxr_linenumber" name="74" href="#74">74</a> }
+<a class="jxr_linenumber" name="75" href="#75">75</a>
+<a class="jxr_linenumber" name="76" href="#76">76</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/omid/transaction/SnapshotFilterImpl.html">SnapshotFilterImpl</a>(<a href="../../../../org/apache/omid/transaction/TableAccessWrapper.html">TableAccessWrapper</a> tableAccessWrapper, CommitTable.Client commitTableClient) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="77" href="#77">77</a> <strong class="jxr_keyword">this</strong>.tableAccessWrapper = tableAccessWrapper;
+<a class="jxr_linenumber" name="78" href="#78">78</a> <strong class="jxr_keyword">this</strong>.commitTableClient = commitTableClient;
+<a class="jxr_linenumber" name="79" href="#79">79</a> }
+<a class="jxr_linenumber" name="80" href="#80">80</a>
+<a class="jxr_linenumber" name="81" href="#81">81</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/omid/transaction/SnapshotFilterImpl.html">SnapshotFilterImpl</a>(<a href="../../../../org/apache/omid/transaction/TableAccessWrapper.html">TableAccessWrapper</a> tableAccessWrapper) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="82" href="#82">82</a> <strong class="jxr_keyword">this</strong>(tableAccessWrapper, <strong class="jxr_keyword">null</strong>);
+<a class="jxr_linenumber" name="83" href="#83">83</a> }
+<a class="jxr_linenumber" name="84" href="#84">84</a>
+<a class="jxr_linenumber" name="85" href="#85">85</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/omid/transaction/SnapshotFilterImpl.html">SnapshotFilterImpl</a>(CommitTable.Client commitTableClient) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="86" href="#86">86</a> <strong class="jxr_keyword">this</strong>(<strong class="jxr_keyword">null</strong>, commitTableClient);
+<a class="jxr_linenumber" name="87" href="#87">87</a> }
+<a class="jxr_linenumber" name="88" href="#88">88</a>
+<a class="jxr_linenumber" name="89" href="#89">89</a> <strong class="jxr_keyword">void</strong> setTableAccessWrapper(<a href="../../../../org/apache/omid/transaction/TableAccessWrapper.html">TableAccessWrapper</a> tableAccessWrapper) {
+<a class="jxr_linenumber" name="90" href="#90">90</a> <strong class="jxr_keyword">this</strong>.tableAccessWrapper = tableAccessWrapper;
+<a class="jxr_linenumber" name="91" href="#91">91</a> }
+<a class="jxr_linenumber" name="92" href="#92">92</a>
+<a class="jxr_linenumber" name="93" href="#93">93</a> <strong class="jxr_keyword">void</strong> setCommitTableClient(CommitTable.Client commitTableClient) {
+<a class="jxr_linenumber" name="94" href="#94">94</a> <strong class="jxr_keyword">this</strong>.commitTableClient = commitTableClient;
+<a class="jxr_linenumber" name="95" href="#95">95</a> }
+<a class="jxr_linenumber" name="96" href="#96">96</a>
+<a class="jxr_linenumber" name="97" href="#97">97</a> <strong class="jxr_keyword">private</strong> String getRowFamilyString(Cell cell) {
+<a class="jxr_linenumber" name="98" href="#98">98</a> <strong class="jxr_keyword">return</strong> Bytes.toString((CellUtil.cloneRow(cell))) + <span class="jxr_string">":"</span> + Bytes.toString(CellUtil.cloneFamily(cell));
+<a class="jxr_linenumber" name="99" href="#99">99</a> }
+<a class="jxr_linenumber" name="100" href="#100">100</a>
+<a class="jxr_linenumber" name="101" href="#101">101</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="102" href="#102">102</a> <em class="jxr_javadoccomment"> * Check whether a cell was deleted using family deletion marker</em>
+<a class="jxr_linenumber" name="103" href="#103">103</a> <em class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="104" href="#104">104</a> <em class="jxr_javadoccomment"> * @param cell The cell to check</em>
+<a class="jxr_linenumber" name="105" href="#105">105</a> <em class="jxr_javadoccomment"> * @param transaction Defines the current snapshot</em>
+<a class="jxr_linenumber" name="106" href="#106">106</a> <em class="jxr_javadoccomment"> * @param familyDeletionCache Accumulates the family deletion markers to identify cells that deleted with a higher version</em>
+<a class="jxr_linenumber" name="107" href="#107">107</a> <em class="jxr_javadoccomment"> * @param commitCache Holds shadow cells information</em>
+<a class="jxr_linenumber" name="108" href="#108">108</a> <em class="jxr_javadoccomment"> * @return Whether the cell was deleted</em>
+<a class="jxr_linenumber" name="109" href="#109">109</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="110" href="#110">110</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> checkFamilyDeletionCache(Cell cell, <a href="../../../../org/apache/omid/transaction/HBaseTransaction.html">HBaseTransaction</a> transaction, Map<String, Long> familyDeletionCache, Map<Long, Long> commitCache) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="111" href="#111">111</a> String key = getRowFamilyString(cell);
+<a class="jxr_linenumber" name="112" href="#112">112</a> Long familyDeletionCommitTimestamp = familyDeletionCache.get(key);
+<a class="jxr_linenumber" name="113" href="#113">113</a> <strong class="jxr_keyword">if</strong> (familyDeletionCommitTimestamp != <strong class="jxr_keyword">null</strong> && familyDeletionCommitTimestamp >= cell.getTimestamp()) {
+<a class="jxr_linenumber" name="114" href="#114">114</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="115" href="#115">115</a> }
+<a class="jxr_linenumber" name="116" href="#116">116</a> <strong class="jxr_keyword">return</strong> false;
+<a class="jxr_linenumber" name="117" href="#117">117</a> }
+<a class="jxr_linenumber" name="118" href="#118">118</a>
+<a class="jxr_linenumber" name="119" href="#119">119</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> healShadowCell(Cell cell, <strong class="jxr_keyword">long</strong> commitTimestamp) {
+<a class="jxr_linenumber" name="120" href="#120">120</a> Put put = <strong class="jxr_keyword">new</strong> Put(CellUtil.cloneRow(cell));
+<a class="jxr_linenumber" name="121" href="#121">121</a> byte[] family = CellUtil.cloneFamily(cell);
+<a class="jxr_linenumber" name="122" href="#122">122</a> byte[] shadowCellQualifier = CellUtils.addShadowCellSuffixPrefix(cell.getQualifierArray(),
+<a class="jxr_linenumber" name="123" href="#123">123</a> cell.getQualifierOffset(),
+<a class="jxr_linenumber" name="124" href="#124">124</a> cell.getQualifierLength());
+<a class="jxr_linenumber" name="125" href="#125">125</a> put.addColumn(family, shadowCellQualifier, cell.getTimestamp(), Bytes.toBytes(commitTimestamp));
+<a class="jxr_linenumber" name="126" href="#126">126</a> <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="127" href="#127">127</a> tableAccessWrapper.put(put);
+<a class="jxr_linenumber" name="128" href="#128">128</a> } <strong class="jxr_keyword">catch</strong> (IOException e) {
+<a class="jxr_linenumber" name="129" href="#129">129</a> LOG.warn(<span class="jxr_string">"Failed healing shadow cell for kv {}"</span>, cell, e);
+<a class="jxr_linenumber" name="130" href="#130">130</a> }
+<a class="jxr_linenumber" name="131" href="#131">131</a> }
+<a class="jxr_linenumber" name="132" href="#132">132</a>
+<a class="jxr_linenumber" name="133" href="#133">133</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="134" href="#134">134</a> <em class="jxr_javadoccomment"> * Check if the transaction commit data is in the shadow cell</em>
+<a class="jxr_linenumber" name="135" href="#135">135</a> <em class="jxr_javadoccomment"> * @param cellStartTimestamp</em>
+<a class="jxr_linenumber" name="136" href="#136">136</a> <em class="jxr_javadoccomment"> * the transaction start timestamp</em>
+<a class="jxr_linenumber" name="137" href="#137">137</a> <em class="jxr_javadoccomment"> * locator</em>
+<a class="jxr_linenumber" name="138" href="#138">138</a> <em class="jxr_javadoccomment"> * the timestamp locator</em>
+<a class="jxr_linenumber" name="139" href="#139">139</a> <em class="jxr_javadoccomment"> * @throws IOException</em>
+<a class="jxr_linenumber" name="140" href="#140">140</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="141" href="#141">141</a> @Override
+<a class="jxr_linenumber" name="142" href="#142">142</a> <strong class="jxr_keyword">public</strong> Optional<CommitTimestamp> readCommitTimestampFromShadowCell(<strong class="jxr_keyword">long</strong> cellStartTimestamp, <a href="../../../../org/apache/omid/transaction/CommitTimestampLocator.html">CommitTimestampLocator</a> locator)
+<a class="jxr_linenumber" name="143" href="#143">143</a> <strong class="jxr_keyword">throws</strong> IOException
+<a class="jxr_linenumber" name="144" href="#144">144</a> {
+<a class="jxr_linenumber" name="145" href="#145">145</a>
+<a class="jxr_linenumber" name="146" href="#146">146</a> Optional<CommitTimestamp> commitTS = Optional.absent();
+<a class="jxr_linenumber" name="147" href="#147">147</a>
+<a class="jxr_linenumber" name="148" href="#148">148</a> Optional<Long> commitTimestamp = locator.readCommitTimestampFromShadowCell(cellStartTimestamp);
+<a class="jxr_linenumber" name="149" href="#149">149</a> <strong class="jxr_keyword">if</strong> (commitTimestamp.isPresent()) {
+<a class="jxr_linenumber" name="150" href="#150">150</a> commitTS = Optional.of(<strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/omid/committable/CommitTable.html">CommitTimestamp</a>(SHADOW_CELL, commitTimestamp.get(), <strong class="jxr_keyword">true</strong>)); <em class="jxr_comment">// Valid commit TS</em>
+<a class="jxr_linenumber" name="151" href="#151">151</a> }
+<a class="jxr_linenumber" name="152" href="#152">152</a>
+<a class="jxr_linenumber" name="153" href="#153">153</a> <strong class="jxr_keyword">return</strong> commitTS;
+<a class="jxr_linenumber" name="154" href="#154">154</a> }
+<a class="jxr_linenumber" name="155" href="#155">155</a>
+<a class="jxr_linenumber" name="156" href="#156">156</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="157" href="#157">157</a> <em class="jxr_javadoccomment"> * This function returns the commit timestamp for a particular cell if the transaction was already committed in</em>
+<a class="jxr_linenumber" name="158" href="#158">158</a> <em class="jxr_javadoccomment"> * the system. In case the transaction was not committed and the cell was written by transaction initialized by a</em>
+<a class="jxr_linenumber" name="159" href="#159">159</a> <em class="jxr_javadoccomment"> * previous TSO server, an invalidation try occurs.</em>
+<a class="jxr_linenumber" name="160" href="#160">160</a> <em class="jxr_javadoccomment"> * Otherwise the function returns a value that indicates that the commit timestamp was not found.</em>
+<a class="jxr_linenumber" name="161" href="#161">161</a> <em class="jxr_javadoccomment"> * @param cellStartTimestamp</em>
+<a class="jxr_linenumber" name="162" href="#162">162</a> <em class="jxr_javadoccomment"> * start timestamp of the cell to locate the commit timestamp for.</em>
+<a class="jxr_linenumber" name="163" href="#163">163</a> <em class="jxr_javadoccomment"> * @param epoch</em>
+<a class="jxr_linenumber" name="164" href="#164">164</a> <em class="jxr_javadoccomment"> * the epoch of the TSO server the current tso client is working with.</em>
+<a class="jxr_linenumber" name="165" href="#165">165</a> <em class="jxr_javadoccomment"> * @param locator</em>
+<a class="jxr_linenumber" name="166" href="#166">166</a> <em class="jxr_javadoccomment"> * a locator to find the commit timestamp in the system.</em>
+<a class="jxr_linenumber" name="167" href="#167">167</a> <em class="jxr_javadoccomment"> * @return the commit timestamp joint with the location where it was found</em>
+<a class="jxr_linenumber" name="168" href="#168">168</a> <em class="jxr_javadoccomment"> * or an object indicating that it was not found in the system</em>
+<a class="jxr_linenumber" name="169" href="#169">169</a> <em class="jxr_javadoccomment"> * @throws IOException in case of any I/O issues</em>
+<a class="jxr_linenumber" name="170" href="#170">170</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="171" href="#171">171</a> @Override
+<a class="jxr_linenumber" name="172" href="#172">172</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/omid/committable/CommitTable.html">CommitTimestamp</a> locateCellCommitTimestamp(<strong class="jxr_keyword">long</strong> cellStartTimestamp, <strong class="jxr_keyword">long</strong> epoch,
+<a class="jxr_linenumber" name="173" href="#173">173</a> <a href="../../../../org/apache/omid/transaction/CommitTimestampLocator.html">CommitTimestampLocator</a> locator) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="174" href="#174">174</a>
+<a class="jxr_linenumber" name="175" href="#175">175</a> <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="176" href="#176">176</a> <em class="jxr_comment">// 1) First check the cache</em>
+<a class="jxr_linenumber" name="177" href="#177">177</a> Optional<Long> commitTimestamp = locator.readCommitTimestampFromCache(cellStartTimestamp);
+<a class="jxr_linenumber" name="178" href="#178">178</a> <strong class="jxr_keyword">if</strong> (commitTimestamp.isPresent()) { <em class="jxr_comment">// Valid commit timestamp</em>
+<a class="jxr_linenumber" name="179" href="#179">179</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/omid/committable/CommitTable.html">CommitTimestamp</a>(CACHE, commitTimestamp.get(), <strong class="jxr_keyword">true</strong>);
+<a class="jxr_linenumber" name="180" href="#180">180</a> }
+<a class="jxr_linenumber" name="181" href="#181">181</a>
+<a class="jxr_linenumber" name="182" href="#182">182</a> <em class="jxr_comment">// 2) Then check the commit table</em>
+<a class="jxr_linenumber" name="183" href="#183">183</a> <em class="jxr_comment">// If the data was written at a previous epoch, check whether the transaction was invalidated</em>
+<a class="jxr_linenumber" name="184" href="#184">184</a> Optional<CommitTimestamp> commitTimeStamp = commitTableClient.getCommitTimestamp(cellStartTimestamp).get();
+<a class="jxr_linenumber" name="185" href="#185">185</a> <strong class="jxr_keyword">if</strong> (commitTimeStamp.isPresent()) {
+<a class="jxr_linenumber" name="186" href="#186">186</a> <strong class="jxr_keyword">return</strong> commitTimeStamp.get();
+<a class="jxr_linenumber" name="187" href="#187">187</a> }
+<a class="jxr_linenumber" name="188" href="#188">188</a>
+<a class="jxr_linenumber" name="189" href="#189">189</a> <em class="jxr_comment">// 3) Read from shadow cell</em>
+<a class="jxr_linenumber" name="190" href="#190">190</a> commitTimeStamp = readCommitTimestampFromShadowCell(cellStartTimestamp, locator);
+<a class="jxr_linenumber" name="191" href="#191">191</a> <strong class="jxr_keyword">if</strong> (commitTimeStamp.isPresent()) {
+<a class="jxr_linenumber" name="192" href="#192">192</a> <strong class="jxr_keyword">return</strong> commitTimeStamp.get();
+<a class="jxr_linenumber" name="193" href="#193">193</a> }
+<a class="jxr_linenumber" name="194" href="#194">194</a>
+<a class="jxr_linenumber" name="195" href="#195">195</a> <em class="jxr_comment">// 4) Check the epoch and invalidate the entry</em>
+<a class="jxr_linenumber" name="196" href="#196">196</a> <em class="jxr_comment">// if the data was written by a transaction from a previous epoch (previous TSO)</em>
+<a class="jxr_linenumber" name="197" href="#197">197</a> <strong class="jxr_keyword">if</strong> (cellStartTimestamp < epoch) {
+<a class="jxr_linenumber" name="198" href="#198">198</a> <strong class="jxr_keyword">boolean</strong> invalidated = commitTableClient.tryInvalidateTransaction(cellStartTimestamp).get();
+<a class="jxr_linenumber" name="199" href="#199">199</a> <strong class="jxr_keyword">if</strong> (invalidated) { <em class="jxr_comment">// Invalid commit timestamp</em>
+<a class="jxr_linenumber" name="200" href="#200">200</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/omid/committable/CommitTable.html">CommitTimestamp</a>(COMMIT_TABLE, CommitTable.INVALID_TRANSACTION_MARKER, false);
+<a class="jxr_linenumber" name="201" href="#201">201</a> }
+<a class="jxr_linenumber" name="202" href="#202">202</a> }
+<a class="jxr_linenumber" name="203" href="#203">203</a>
+<a class="jxr_linenumber" name="204" href="#204">204</a> <em class="jxr_comment">// 5) We did not manage to invalidate the transactions then check the commit table</em>
+<a class="jxr_linenumber" name="205" href="#205">205</a> commitTimeStamp = commitTableClient.getCommitTimestamp(cellStartTimestamp).get();
+<a class="jxr_linenumber" name="206" href="#206">206</a> <strong class="jxr_keyword">if</strong> (commitTimeStamp.isPresent()) {
+<a class="jxr_linenumber" name="207" href="#207">207</a> <strong class="jxr_keyword">return</strong> commitTimeStamp.get();
+<a class="jxr_linenumber" name="208" href="#208">208</a> }
+<a class="jxr_linenumber" name="209" href="#209">209</a>
+<a class="jxr_linenumber" name="210" href="#210">210</a> <em class="jxr_comment">// 6) Read from shadow cell</em>
+<a class="jxr_linenumber" name="211" href="#211">211</a> commitTimeStamp = readCommitTimestampFromShadowCell(cellStartTimestamp, locator);
+<a class="jxr_linenumber" name="212" href="#212">212</a> <strong class="jxr_keyword">if</strong> (commitTimeStamp.isPresent()) {
+<a class="jxr_linenumber" name="213" href="#213">213</a> <strong class="jxr_keyword">return</strong> commitTimeStamp.get();
+<a class="jxr_linenumber" name="214" href="#214">214</a> }
+<a class="jxr_linenumber" name="215" href="#215">215</a>
+<a class="jxr_linenumber" name="216" href="#216">216</a> <em class="jxr_comment">// *) Otherwise return not found</em>
+<a class="jxr_linenumber" name="217" href="#217">217</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/omid/committable/CommitTable.html">CommitTimestamp</a>(NOT_PRESENT, -1L <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> TODO Check if we should return this */</em>, <strong class="jxr_keyword">true</strong>);
+<a class="jxr_linenumber" name="218" href="#218">218</a> } <strong class="jxr_keyword">catch</strong> (InterruptedException e) {
+<a class="jxr_linenumber" name="219" href="#219">219</a> Thread.currentThread().interrupt();
+<a class="jxr_linenumber" name="220" href="#220">220</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IOException(<span class="jxr_string">"Interrupted while finding commit timestamp"</span>, e);
+<a class="jxr_linenumber" name="221" href="#221">221</a> } <strong class="jxr_keyword">catch</strong> (ExecutionException e) {
+<a class="jxr_linenumber" name="222" href="#222">222</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IOException(<span class="jxr_string">"Problem finding commit timestamp"</span>, e);
+<a class="jxr_linenumber" name="223" href="#223">223</a> }
+<a class="jxr_linenumber" name="224" href="#224">224</a>
+<a class="jxr_linenumber" name="225" href="#225">225</a> }
+<a class="jxr_linenumber" name="226" href="#226">226</a>
+<a class="jxr_linenumber" name="227" href="#227">227</a> <strong class="jxr_keyword">public</strong> Optional<Long> tryToLocateCellCommitTimestamp(<strong class="jxr_keyword">long</strong> epoch,
+<a class="jxr_linenumber" name="228" href="#228">228</a> Cell cell,
+<a class="jxr_linenumber" name="229" href="#229">229</a> Map<Long, Long> commitCache)
+<a class="jxr_linenumber" name="230" href="#230">230</a> <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="231" href="#231">231</a>
+<a class="jxr_linenumber" name="232" href="#232">232</a> <a href="../../../../org/apache/omid/committable/CommitTable.html">CommitTimestamp</a> tentativeCommitTimestamp =
+<a class="jxr_linenumber" name="233" href="#233">233</a> locateCellCommitTimestamp(
+<a class="jxr_linenumber" name="234" href="#234">234</a> cell.getTimestamp(),
+<a class="jxr_linenumber" name="235" href="#235">235</a> epoch,
+<a class="jxr_linenumber" name="236" href="#236">236</a> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/omid/transaction/HBaseTransactionManager.html">CommitTimestampLocatorImpl</a>(
+<a class="jxr_linenumber" name="237" href="#237">237</a> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/omid/transaction/HBaseCellId.html">HBaseCellId</a>(<strong class="jxr_keyword">null</strong>,
+<a class="jxr_linenumber" name="238" href="#238">238</a> CellUtil.cloneRow(cell),
+<a class="jxr_linenumber" name="239" href="#239">239</a> CellUtil.cloneFamily(cell),
+<a class="jxr_linenumber" name="240" href="#240">240</a> CellUtil.cloneQualifier(cell),
+<a class="jxr_linenumber" name="241" href="#241">241</a> cell.getTimestamp()),
+<a class="jxr_linenumber" name="242" href="#242">242</a> commitCache,
+<a class="jxr_linenumber" name="243" href="#243">243</a> tableAccessWrapper));
+<a class="jxr_linenumber" name="244" href="#244">244</a>
+<a class="jxr_linenumber" name="245" href="#245">245</a> <em class="jxr_comment">// If transaction that added the cell was invalidated</em>
+<a class="jxr_linenumber" name="246" href="#246">246</a> <strong class="jxr_keyword">if</strong> (!tentativeCommitTimestamp.isValid()) {
+<a class="jxr_linenumber" name="247" href="#247">247</a> <strong class="jxr_keyword">return</strong> Optional.absent();
+<a class="jxr_linenumber" name="248" href="#248">248</a> }
+<a class="jxr_linenumber" name="249" href="#249">249</a>
+<a class="jxr_linenumber" name="250" href="#250">250</a> <strong class="jxr_keyword">switch</strong> (tentativeCommitTimestamp.getLocation()) {
+<a class="jxr_linenumber" name="251" href="#251">251</a> <strong class="jxr_keyword">case</strong> COMMIT_TABLE:
+<a class="jxr_linenumber" name="252" href="#252">252</a> <em class="jxr_comment">// If the commit timestamp is found in the persisted commit table,</em>
+<a class="jxr_linenumber" name="253" href="#253">253</a> <em class="jxr_comment">// that means the writing process of the shadow cell in the post</em>
+<a class="jxr_linenumber" name="254" href="#254">254</a> <em class="jxr_comment">// commit phase of the client probably failed, so we heal the shadow</em>
+<a class="jxr_linenumber" name="255" href="#255">255</a> <em class="jxr_comment">// cell with the right commit timestamp for avoiding further reads to</em>
+<a class="jxr_linenumber" name="256" href="#256">256</a> <em class="jxr_comment">// hit the storage</em>
+<a class="jxr_linenumber" name="257" href="#257">257</a> healShadowCell(cell, tentativeCommitTimestamp.getValue());
+<a class="jxr_linenumber" name="258" href="#258">258</a> <strong class="jxr_keyword">return</strong> Optional.of(tentativeCommitTimestamp.getValue());
+<a class="jxr_linenumber" name="259" href="#259">259</a> <strong class="jxr_keyword">case</strong> CACHE:
+<a class="jxr_linenumber" name="260" href="#260">260</a> <strong class="jxr_keyword">case</strong> SHADOW_CELL:
+<a class="jxr_linenumber" name="261" href="#261">261</a> <strong class="jxr_keyword">return</strong> Optional.of(tentativeCommitTimestamp.getValue());
+<a class="jxr_linenumber" name="262" href="#262">262</a> <strong class="jxr_keyword">case</strong> NOT_PRESENT:
+<a class="jxr_linenumber" name="263" href="#263">263</a> <strong class="jxr_keyword">return</strong> Optional.absent();
+<a class="jxr_linenumber" name="264" href="#264">264</a> <strong class="jxr_keyword">default</strong>:
+<a class="jxr_linenumber" name="265" href="#265">265</a> assert (false);
+<a class="jxr_linenumber" name="266" href="#266">266</a> <strong class="jxr_keyword">return</strong> Optional.absent();
+<a class="jxr_linenumber" name="267" href="#267">267</a> }
+<a class="jxr_linenumber" name="268" href="#268">268</a> }
+<a class="jxr_linenumber" name="269" href="#269">269</a>
+<a class="jxr_linenumber" name="270" href="#270">270</a>
+<a class="jxr_linenumber" name="271" href="#271">271</a> <strong class="jxr_keyword">private</strong> Optional<Long> getCommitTimestamp(Cell kv, <a href="../../../../org/apache/omid/transaction/HBaseTransaction.html">HBaseTransaction</a> transaction, Map<Long, Long> commitCache)
+<a class="jxr_linenumber" name="272" href="#272">272</a> <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="273" href="#273">273</a>
+<a class="jxr_linenumber" name="274" href="#274">274</a> <strong class="jxr_keyword">long</strong> startTimestamp = transaction.getStartTimestamp();
+<a class="jxr_linenumber" name="275" href="#275">275</a>
+<a class="jxr_linenumber" name="276" href="#276">276</a> <strong class="jxr_keyword">if</strong> (kv.getTimestamp() == startTimestamp) {
+<a class="jxr_linenumber" name="277" href="#277">277</a> <strong class="jxr_keyword">return</strong> Optional.of(startTimestamp);
+<a class="jxr_linenumber" name="278" href="#278">278</a> }
+<a class="jxr_linenumber" name="279" href="#279">279</a>
+<a class="jxr_linenumber" name="280" href="#280">280</a> <strong class="jxr_keyword">if</strong> (commitTableClient == <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="281" href="#281">281</a> assert (transaction.getTransactionManager() != <strong class="jxr_keyword">null</strong>);
+<a class="jxr_linenumber" name="282" href="#282">282</a> commitTableClient = transaction.getTransactionManager().getCommitTableClient();
+<a class="jxr_linenumber" name="283" href="#283">283</a> }
+<a class="jxr_linenumber" name="284" href="#284">284</a>
+<a class="jxr_linenumber" name="285" href="#285">285</a> <strong class="jxr_keyword">return</strong> tryToLocateCellCommitTimestamp(transaction.getEpoch(), kv,
+<a class="jxr_linenumber" name="286" href="#286">286</a> commitCache);
+<a class="jxr_linenumber" name="287" href="#287">287</a> }
+<a class="jxr_linenumber" name="288" href="#288">288</a>
+<a class="jxr_linenumber" name="289" href="#289">289</a> <strong class="jxr_keyword">private</strong> Map<Long, Long> buildCommitCache(List<Cell> rawCells) {
+<a class="jxr_linenumber" name="290" href="#290">290</a>
+<a class="jxr_linenumber" name="291" href="#291">291</a> Map<Long, Long> commitCache = <strong class="jxr_keyword">new</strong> HashMap<>();
+<a class="jxr_linenumber" name="292" href="#292">292</a>
+<a class="jxr_linenumber" name="293" href="#293">293</a> <strong class="jxr_keyword">for</strong> (Cell cell : rawCells) {
+<a class="jxr_linenumber" name="294" href="#294">294</a> <strong class="jxr_keyword">if</strong> (CellUtils.isShadowCell(cell)) {
+<a class="jxr_linenumber" name="295" href="#295">295</a> commitCache.put(cell.getTimestamp(), Bytes.toLong(CellUtil.cloneValue(cell)));
+<a class="jxr_linenumber" name="296" href="#296">296</a> }
+<a class="jxr_linenumber" name="297" href="#297">297</a> }
+<a class="jxr_linenumber" name="298" href="#298">298</a>
+<a class="jxr_linenumber" name="299" href="#299">299</a> <strong class="jxr_keyword">return</strong> commitCache;
+<a class="jxr_linenumber" name="300" href="#300">300</a> }
+<a class="jxr_linenumber" name="301" href="#301">301</a>
+<a class="jxr_linenumber" name="302" href="#302">302</a>
+<a class="jxr_linenumber" name="303" href="#303">303</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> buildFamilyDeletionCache(<a href="../../../../org/apache/omid/transaction/HBaseTransaction.html">HBaseTransaction</a> transaction, List<Cell> rawCells, Map<String, Long> familyDeletionCache, Map<Long, Long> commitCache, Map<String,byte[]> attributeMap) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="304" href="#304">304</a> <strong class="jxr_keyword">for</strong> (Cell cell : rawCells) {
+<a class="jxr_linenumber" name="305" href="#305">305</a> <strong class="jxr_keyword">if</strong> (CellUtils.isFamilyDeleteCell(cell)) {
+<a class="jxr_linenumber" name="306" href="#306">306</a> String key = getRowFamilyString(cell);
+<a class="jxr_linenumber" name="307" href="#307">307</a>
+<a class="jxr_linenumber" name="308" href="#308">308</a> <strong class="jxr_keyword">if</strong> (familyDeletionCache.containsKey(key))
+<a class="jxr_linenumber" name="309" href="#309">309</a> <strong class="jxr_keyword">return</strong>;
+<a class="jxr_linenumber" name="310" href="#310">310</a>
+<a class="jxr_linenumber" name="311" href="#311">311</a> Optional<Long> commitTimeStamp = getTSIfInTransaction(cell, transaction);
+<a class="jxr_linenumber" name="312" href="#312">312</a>
+<a class="jxr_linenumber" name="313" href="#313">313</a> <strong class="jxr_keyword">if</strong> (!commitTimeStamp.isPresent()) {
+<a class="jxr_linenumber" name="314" href="#314">314</a> commitTimeStamp = getTSIfInSnapshot(cell, transaction, commitCache);
+<a class="jxr_linenumber" name="315" href="#315">315</a> }
+<a class="jxr_linenumber" name="316" href="#316">316</a>
+<a class="jxr_linenumber" name="317" href="#317">317</a> <strong class="jxr_keyword">if</strong> (commitTimeStamp.isPresent()) {
+<a class="jxr_linenumber" name="318" href="#318">318</a> familyDeletionCache.put(key, commitTimeStamp.get());
+<a class="jxr_linenumber" name="319" href="#319">319</a> } <strong class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="320" href="#320">320</a> Cell lastCell = cell;
+<a class="jxr_linenumber" name="321" href="#321">321</a> Map<Long, Long> cmtCache;
+<a class="jxr_linenumber" name="322" href="#322">322</a> <strong class="jxr_keyword">boolean</strong> foundCommittedFamilyDeletion = false;
+<a class="jxr_linenumber" name="323" href="#323">323</a> <strong class="jxr_keyword">while</strong> (!foundCommittedFamilyDeletion) {
+<a class="jxr_linenumber" name="324" href="#324">324</a>
+<a class="jxr_linenumber" name="325" href="#325">325</a> Get g = createPendingGet(lastCell, 3);
+<a class="jxr_linenumber" name="326" href="#326">326</a>
+<a class="jxr_linenumber" name="327" href="#327">327</a> Result result = tableAccessWrapper.get(g);
+<a class="jxr_linenumber" name="328" href="#328">328</a> List<Cell> resultCells = result.listCells();
+<a class="jxr_linenumber" name="329" href="#329">329</a> <strong class="jxr_keyword">if</strong> (resultCells == <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="330" href="#330">330</a> <strong class="jxr_keyword">break</strong>;
+<a class="jxr_linenumber" name="331" href="#331">331</a> }
+<a class="jxr_linenumber" name="332" href="#332">332</a>
+<a class="jxr_linenumber" name="333" href="#333">333</a> cmtCache = buildCommitCache(resultCells);
+<a class="jxr_linenumber" name="334" href="#334">334</a> <strong class="jxr_keyword">for</strong> (Cell c : resultCells) {
+<a class="jxr_linenumber" name="335" href="#335">335</a> <strong class="jxr_keyword">if</strong> (CellUtils.isFamilyDeleteCell(c)) {
+<a class="jxr_linenumber" name="336" href="#336">336</a> commitTimeStamp = getTSIfInSnapshot(c, transaction, cmtCache);
+<a class="jxr_linenumber" name="337" href="#337">337</a> <strong class="jxr_keyword">if</strong> (commitTimeStamp.isPresent()) {
+<a class="jxr_linenumber" name="338" href="#338">338</a> familyDeletionCache.put(key, commitTimeStamp.get());
+<a class="jxr_linenumber" name="339" href="#339">339</a> foundCommittedFamilyDeletion = <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="340" href="#340">340</a> <strong class="jxr_keyword">break</strong>;
+<a class="jxr_linenumber" name="341" href="#341">341</a> }
+<a class="jxr_linenumber" name="342" href="#342">342</a> lastCell = c;
+<a class="jxr_linenumber" name="343" href="#343">343</a> }
+<a class="jxr_linenumber" name="344" href="#344">344</a> }
+<a class="jxr_linenumber" name="345" href="#345">345</a> }
+<a class="jxr_linenumber" name="346" href="#346">346</a> }
+<a class="jxr_linenumber" name="347" href="#347">347</a> }
+<a class="jxr_linenumber" name="348" href="#348">348</a> }
+<a class="jxr_linenumber" name="349" href="#349">349</a> }
+<a class="jxr_linenumber" name="350" href="#350">350</a>
+<a class="jxr_linenumber" name="351" href="#351">351</a>
+<a class="jxr_linenumber" name="352" href="#352">352</a> <strong class="jxr_keyword">public</strong> Optional<Long> getTSIfInTransaction(Cell kv, <a href="../../../../org/apache/omid/transaction/HBaseTransaction.html">HBaseTransaction</a> transaction) {
+<a class="jxr_linenumber" name="353" href="#353">353</a> <strong class="jxr_keyword">long</strong> startTimestamp = transaction.getStartTimestamp();
+<a class="jxr_linenumber" name="354" href="#354">354</a> <strong class="jxr_keyword">long</strong> readTimestamp = transaction.getReadTimestamp();
+<a class="jxr_linenumber" name="355" href="#355">355</a>
+<a class="jxr_linenumber" name="356" href="#356">356</a> <em class="jxr_comment">// A cell was written by a transaction if its timestamp is larger than its startTimestamp and smaller or equal to its readTimestamp.</em>
+<a class="jxr_linenumber" name="357" href="#357">357</a> <em class="jxr_comment">// There also might be a case where the cell was written by the transaction and its timestamp equals to its writeTimestamp, however,</em>
+<a class="jxr_linenumber" name="358" href="#358">358</a> <em class="jxr_comment">// this case occurs after checkpoint and in this case we do not want to read this data.</em>
+<a class="jxr_linenumber" name="359" href="#359">359</a> <strong class="jxr_keyword">if</strong> (kv.getTimestamp() >= startTimestamp && kv.getTimestamp() <= readTimestamp) {
+<a class="jxr_linenumber" name="360" href="#360">360</a> <strong class="jxr_keyword">return</strong> Optional.of(kv.getTimestamp());
+<a class="jxr_linenumber" name="361" href="#361">361</a> }
+<a class="jxr_linenumber" name="362" href="#362">362</a>
+<a class="jxr_linenumber" name="363" href="#363">363</a> <strong class="jxr_keyword">return</strong> Optional.absent();
+<a class="jxr_linenumber" name="364" href="#364">364</a> }
+<a class="jxr_linenumber" name="365" href="#365">365</a>
+<a class="jxr_linenumber" name="366" href="#366">366</a>
+<a class="jxr_linenumber" name="367" href="#367">367</a> <strong class="jxr_keyword">public</strong> Optional<Long> getTSIfInSnapshot(Cell kv, <a href="../../../../org/apache/omid/transaction/HBaseTransaction.html">HBaseTransaction</a> transaction, Map<Long, Long> commitCache)
+<a class="jxr_linenumber" name="368" href="#368">368</a> <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="369" href="#369">369</a>
+<a class="jxr_linenumber" name="370" href="#370">370</a> Optional<Long> commitTimestamp = getCommitTimestamp(kv, transaction, commitCache);
+<a class="jxr_linenumber" name="371" href="#371">371</a>
+<a class="jxr_linenumber" name="372" href="#372">372</a> <strong class="jxr_keyword">if</strong> (commitTimestamp.isPresent() && commitTimestamp.get() < transaction.getStartTimestamp())
+<a class="jxr_linenumber" name="373" href="#373">373</a> <strong class="jxr_keyword">return</strong> commitTimestamp;
+<a class="jxr_linenumber" name="374" href="#374">374</a>
+<a class="jxr_linenumber" name="375" href="#375">375</a> <strong class="jxr_keyword">return</strong> Optional.absent();
+<a class="jxr_linenumber" name="376" href="#376">376</a> }
+<a class="jxr_linenumber" name="377" href="#377">377</a>
+<a class="jxr_linenumber" name="378" href="#378">378</a> <strong class="jxr_keyword">private</strong> Get createPendingGet(Cell cell, <strong class="jxr_keyword">int</strong> versionCount) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="379" href="#379">379</a>
+<a class="jxr_linenumber" name="380" href="#380">380</a> Get pendingGet = <strong class="jxr_keyword">new</strong> Get(CellUtil.cloneRow(cell));
+<a class="jxr_linenumber" name="381" href="#381">381</a> pendingGet.addColumn(CellUtil.cloneFamily(cell), CellUtil.cloneQualifier(cell));
+<a class="jxr_linenumber" name="382" href="#382">382</a> pendingGet.addColumn(CellUtil.cloneFamily(cell), CellUtils.addShadowCellSuffixPrefix(cell.getQualifierArray(),
+<a class="jxr_linenumber" name="383" href="#383">383</a> cell.getQualifierOffset(),
+<a class="jxr_linenumber" name="384" href="#384">384</a> cell.getQualifierLength()));
+<a class="jxr_linenumber" name="385" href="#385">385</a> pendingGet.setMaxVersions(versionCount);
+<a class="jxr_linenumber" name="386" href="#386">386</a> pendingGet.setTimeRange(0, cell.getTimestamp());
+<a class="jxr_linenumber" name="387" href="#387">387</a>
+<a class="jxr_linenumber" name="388" href="#388">388</a> <strong class="jxr_keyword">return</strong> pendingGet;
+<a class="jxr_linenumber" name="389" href="#389">389</a> }
+<a class="jxr_linenumber" name="390" href="#390">390</a>
+<a class="jxr_linenumber" name="391" href="#391">391</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="392" href="#392">392</a> <em class="jxr_javadoccomment"> * Filters the raw results returned from HBase and returns only those belonging to the current snapshot, as defined</em>
+<a class="jxr_linenumber" name="393" href="#393">393</a> <em class="jxr_javadoccomment"> * by the transaction object. If the raw results don't contain enough information for a particular qualifier, it</em>
+<a class="jxr_linenumber" name="394" href="#394">394</a> <em class="jxr_javadoccomment"> * will request more versions from HBase.</em>
+<a class="jxr_linenumber" name="395" href="#395">395</a> <em class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="396" href="#396">396</a> <em class="jxr_javadoccomment"> * @param rawCells Raw cells that we are going to filter</em>
+<a class="jxr_linenumber" name="397" href="#397">397</a> <em class="jxr_javadoccomment"> * @param transaction Defines the current snapshot</em>
+<a class="jxr_linenumber" name="398" href="#398">398</a> <em class="jxr_javadoccomment"> * @param versionsToRequest Number of versions requested from hbase</em>
+<a class="jxr_linenumber" name="399" href="#399">399</a> <em class="jxr_javadoccomment"> * @param familyDeletionCache Accumulates the family deletion markers to identify cells that deleted with a higher version</em>
+<a class="jxr_linenumber" name="400" href="#400">400</a> <em class="jxr_javadoccomment"> * @return Filtered KVs belonging to the transaction snapshot</em>
+<a class="jxr_linenumber" name="401" href="#401">401</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="402" href="#402">402</a> @Override
+<a class="jxr_linenumber" name="403" href="#403">403</a> <strong class="jxr_keyword">public</strong> List<Cell> filterCellsForSnapshot(List<Cell> rawCells, <a href="../../../../org/apache/omid/transaction/HBaseTransaction.html">HBaseTransaction</a> transaction,
+<a class="jxr_linenumber" name="404" href="#404">404</a> <strong class="jxr_keyword">int</strong> versionsToRequest, Map<String, Long> familyDeletionCache, Map<String,byte[]> attributeMap) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="405" href="#405">405</a>
+<a class="jxr_linenumber" name="406" href="#406">406</a> assert (rawCells != <strong class="jxr_keyword">null</strong> && transaction != <strong class="jxr_keyword">null</strong> && versionsToRequest >= 1);
+<a class="jxr_linenumber" name="407" href="#407">407</a>
+<a class="jxr_linenumber" name="408" href="#408">408</a> List<Cell> keyValuesInSnapshot = <strong class="jxr_keyword">new</strong> ArrayList<>();
+<a class="jxr_linenumber" name="409" href="#409">409</a> List<Get> pendingGetsList = <strong class="jxr_keyword">new</strong> ArrayList<>();
+<a class="jxr_linenumber" name="410" href="#410">410</a>
+<a class="jxr_linenumber" name="411" href="#411">411</a> <strong class="jxr_keyword">int</strong> numberOfVersionsToFetch = versionsToRequest * 2;
+<a class="jxr_linenumber" name="412" href="#412">412</a> <strong class="jxr_keyword">if</strong> (numberOfVersionsToFetch < 1) {
+<a class="jxr_linenumber" name="413" href="#413">413</a> numberOfVersionsToFetch = versionsToRequest;
+<a class="jxr_linenumber" name="414" href="#414">414</a> }
+<a class="jxr_linenumber" name="415" href="#415">415</a>
+<a class="jxr_linenumber" name="416" href="#416">416</a> Map<Long, Long> commitCache = buildCommitCache(rawCells);
+<a class="jxr_linenumber" name="417" href="#417">417</a> buildFamilyDeletionCache(transaction, rawCells, familyDeletionCache, commitCache, attributeMap);
+<a class="jxr_linenumber" name="418" href="#418">418</a>
+<a class="jxr_linenumber" name="419" href="#419">419</a> ImmutableList<Collection<Cell>> filteredCells;
+<a class="jxr_linenumber" name="420" href="#420">420</a> <strong class="jxr_keyword">if</strong> (transaction.getVisibilityLevel() == VisibilityLevel.SNAPSHOT_ALL) {
+<a class="jxr_linenumber" name="421" href="#421">421</a> filteredCells = groupCellsByColumnFilteringShadowCells(rawCells);
+<a class="jxr_linenumber" name="422" href="#422">422</a> } <strong class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="423" href="#423">423</a> filteredCells = groupCellsByColumnFilteringShadowCellsAndFamilyDeletion(rawCells);
+<a class="jxr_linenumber" name="424" href="#424">424</a> }
+<a class="jxr_linenumber" name="425" href="#425">425</a>
+<a class="jxr_linenumber" name="426" href="#426">426</a> <strong class="jxr_keyword">for</strong> (Collection<Cell> columnCells : filteredCells) {
+<a class="jxr_linenumber" name="427" href="#427">427</a> <strong class="jxr_keyword">boolean</strong> snapshotValueFound = false;
+<a class="jxr_linenumber" name="428" href="#428">428</a> Cell oldestCell = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="429" href="#429">429</a> <strong class="jxr_keyword">for</strong> (Cell cell : columnCells) {
+<a class="jxr_linenumber" name="430" href="#430">430</a> oldestCell = cell;
+<a class="jxr_linenumber" name="431" href="#431">431</a> <strong class="jxr_keyword">if</strong> (getTSIfInTransaction(cell, transaction).isPresent() ||
+<a class="jxr_linenumber" name="432" href="#432">432</a> getTSIfInSnapshot(cell, transaction, commitCache).isPresent()) {
+<a class="jxr_linenumber" name="433" href="#433">433</a>
+<a class="jxr_linenumber" name="434" href="#434">434</a> <strong class="jxr_keyword">if</strong> (transaction.getVisibilityLevel() == VisibilityLevel.SNAPSHOT_ALL) {
+<a class="jxr_linenumber" name="435" href="#435">435</a> keyValuesInSnapshot.add(cell);
+<a class="jxr_linenumber" name="436" href="#436">436</a> <strong class="jxr_keyword">if</strong> (getTSIfInTransaction(cell, transaction).isPresent()) {
+<a class="jxr_linenumber" name="437" href="#437">437</a> snapshotValueFound = false;
+<a class="jxr_linenumber" name="438" href="#438">438</a> <strong class="jxr_keyword">continue</strong>;
+<a class="jxr_linenumber" name="439" href="#439">439</a> } <strong class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="440" href="#440">440</a> snapshotValueFound = <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="441" href="#441">441</a> <strong class="jxr_keyword">break</strong>;
+<a class="jxr_linenumber" name="442" href="#442">442</a> }
+<a class="jxr_linenumber" name="443" href="#443">443</a> } <strong class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="444" href="#444">444</a> <strong class="jxr_keyword">if</strong> (!checkFamilyDeletionCache(cell, transaction, familyDeletionCache, commitCache) &&
+<a class="jxr_linenumber" name="445" href="#445">445</a> !CellUtils.isTombstone(cell)) {
+<a class="jxr_linenumber" name="446" href="#446">446</a> keyValuesInSnapshot.add(cell);
+<a class="jxr_linenumber" name="447" href="#447">447</a> }
+<a class="jxr_linenumber" name="448" href="#448">448</a> snapshotValueFound = <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="449" href="#449">449</a> <strong class="jxr_keyword">break</strong>;
+<a class="jxr_linenumber" name="450" href="#450">450</a>
+<a class="jxr_linenumber" name="451" href="#451">451</a> }
+<a class="jxr_linenumber" name="452" href="#452">452</a> }
+<a class="jxr_linenumber" name="453" href="#453">453</a> }
+<a class="jxr_linenumber" name="454" href="#454">454</a> <strong class="jxr_keyword">if</strong> (!snapshotValueFound) {
+<a class="jxr_linenumber" name="455" href="#455">455</a> assert (oldestCell != <strong class="jxr_keyword">null</strong>);
+<a class="jxr_linenumber" name="456" href="#456">456</a> Get pendingGet = createPendingGet(oldestCell, numberOfVersionsToFetch);
+<a class="jxr_linenumber" name="457" href="#457">457</a> <strong class="jxr_keyword">for</strong> (Map.Entry<String,byte[]> entry : attributeMap.entrySet()) {
+<a class="jxr_linenumber" name="458" href="#458">458</a> pendingGet.setAttribute(entry.getKey(), entry.getValue());
+<a class="jxr_linenumber" name="459" href="#459">459</a> }
+<a class="jxr_linenumber" name="460" href="#460">460</a> pendingGetsList.add(pendingGet);
+<a class="jxr_linenumber" name="461" href="#461">461</a> }
+<a class="jxr_linenumber" name="462" href="#462">462</a> }
+<a class="jxr_linenumber" name="463" href="#463">463</a>
+<a class="jxr_linenumber" name="464" href="#464">464</a> <strong class="jxr_keyword">if</strong> (!pendingGetsList.isEmpty()) {
+<a class="jxr_linenumber" name="465" href="#465">465</a> Result[] pendingGetsResults = tableAccessWrapper.get(pendingGetsList);
+<a class="jxr_linenumber" name="466" href="#466">466</a> <strong class="jxr_keyword">for</strong> (Result pendingGetResult : pendingGetsResults) {
+<a class="jxr_linenumber" name="467" href="#467">467</a> <strong class="jxr_keyword">if</strong> (!pendingGetResult.isEmpty()) {
+<a class="jxr_linenumber" name="468" href="#468">468</a> keyValuesInSnapshot.addAll(
+<a class="jxr_linenumber" name="469" href="#469">469</a> filterCellsForSnapshot(pendingGetResult.listCells(), transaction, numberOfVersionsToFetch, familyDeletionCache, attributeMap));
+<a class="jxr_linenumber" name="470" href="#470">470</a> }
+<a class="jxr_linenumber" name="471" href="#471">471</a> }
+<a class="jxr_linenumber" name="472" href="#472">472</a> }
+<a class="jxr_linenumber" name="473" href="#473">473</a>
+<a class="jxr_linenumber" name="474" href="#474">474</a> Collections.sort(keyValuesInSnapshot, KeyValue.COMPARATOR);
+<a class="jxr_linenumber" name="475" href="#475">475</a>
+<a class="jxr_linenumber" name="476" href="#476">476</a> <strong class="jxr_keyword">return</strong> keyValuesInSnapshot;
+<a class="jxr_linenumber" name="477" href="#477">477</a> }
+<a class="jxr_linenumber" name="478" href="#478">478</a>
+<a class="jxr_linenumber" name="479" href="#479">479</a> @Override
+<a class="jxr_linenumber" name="480" href="#480">480</a> <strong class="jxr_keyword">public</strong> Result get(Get get, <a href="../../../../org/apache/omid/transaction/HBaseTransaction.html">HBaseTransaction</a> transaction) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="481" href="#481">481</a> Result result = tableAccessWrapper.get(get);
+<a class="jxr_linenumber" name="482" href="#482">482</a>
+<a class="jxr_linenumber" name="483" href="#483">483</a> List<Cell> filteredKeyValues = Collections.emptyList();
+<a class="jxr_linenumber" name="484" href="#484">484</a> <strong class="jxr_keyword">if</strong> (!result.isEmpty()) {
+<a class="jxr_linenumber" name="485" href="#485">485</a> filteredKeyValues = filterCellsForSnapshot(result.listCells(), transaction, get.getMaxVersions(), <strong class="jxr_keyword">new</strong> HashMap<String, Long>(), get.getAttributesMap());
+<a class="jxr_linenumber" name="486" href="#486">486</a> }
+<a class="jxr_linenumber" name="487" href="#487">487</a>
+<a class="jxr_linenumber" name="488" href="#488">488</a> <strong class="jxr_keyword">return</strong> Result.create(filteredKeyValues);
+<a class="jxr_linenumber" name="489" href="#489">489</a> }
+<a class="jxr_linenumber" name="490" href="#490">490</a>
+<a class="jxr_linenumber" name="491" href="#491">491</a> @Override
+<a class="jxr_linenumber" name="492" href="#492">492</a> <strong class="jxr_keyword">public</strong> ResultScanner getScanner(Scan scan, <a href="../../../../org/apache/omid/transaction/HBaseTransaction.html">HBaseTransaction</a> transaction) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="493" href="#493">493</a>
+<a class="jxr_linenumber" name="494" href="#494">494</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/omid/transaction/SnapshotFilterImpl.html">TransactionalClientScanner</a>(transaction, scan, 1);
+<a class="jxr_linenumber" name="495" href="#495">495</a>
+<a class="jxr_linenumber" name="496" href="#496">496</a> }
+<a class="jxr_linenumber" name="497" href="#497">497</a>
+<a class="jxr_linenumber" name="498" href="#498">498</a> @Override
+<a class="jxr_linenumber" name="499" href="#499">499</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isCommitted(<a href="../../../../org/apache/omid/transaction/HBaseCellId.html">HBaseCellId</a> hBaseCellId, <strong class="jxr_keyword">long</strong> epoch) <strong class="jxr_keyword">throws</strong> TransactionException {
+<a class="jxr_linenumber" name="500" href="#500">500</a> <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="501" href="#501">501</a> <strong class="jxr_keyword">long</strong> timestamp = hBaseCellId.getTimestamp() - (hBaseCellId.getTimestamp() % AbstractTransactionManager.MAX_CHECKPOINTS_PER_TXN);
+<a class="jxr_linenumber" name="502" href="#502">502</a> <a href="../../../../org/apache/omid/committable/CommitTable.html">CommitTimestamp</a> tentativeCommitTimestamp =
+<a class="jxr_linenumber" name="503" href="#503">503</a> locateCellCommitTimestamp(timestamp, epoch,
+<a class="jxr_linenumber" name="504" href="#504">504</a> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/omid/transaction/HBaseTransactionManager.html">CommitTimestampLocatorImpl</a>(hBaseCellId, Maps.<Long, Long>newHashMap(), tableAccessWrapper));
+<a class="jxr_linenumber" name="505" href="#505">505</a>
+<a class="jxr_linenumber" name="506" href="#506">506</a> <em class="jxr_comment">// If transaction that added the cell was invalidated</em>
+<a class="jxr_linenumber" name="507" href="#507">507</a> <strong class="jxr_keyword">if</strong> (!tentativeCommitTimestamp.isValid()) {
+<a class="jxr_linenumber" name="508" href="#508">508</a> <strong class="jxr_keyword">return</strong> false;
+<a class="jxr_linenumber" name="509" href="#509">509</a> }
+<a class="jxr_linenumber" name="510" href="#510">510</a>
+<a class="jxr_linenumber" name="511" href="#511">511</a> <strong class="jxr_keyword">switch</strong> (tentativeCommitTimestamp.getLocation()) {
+<a class="jxr_linenumber" name="512" href="#512">512</a> <strong class="jxr_keyword">case</strong> COMMIT_TABLE:
+<a class="jxr_linenumber" name="513" href="#513">513</a> <strong class="jxr_keyword">case</strong> SHADOW_CELL:
+<a class="jxr_linenumber" name="514" href="#514">514</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="515" href="#515">515</a> <strong class="jxr_keyword">case</strong> NOT_PRESENT:
+<a class="jxr_linenumber" name="516" href="#516">516</a> <strong class="jxr_keyword">return</strong> false;
+<a class="jxr_linenumber" name="517" href="#517">517</a> <strong class="jxr_keyword">case</strong> CACHE: <em class="jxr_comment">// cache was empty</em>
+<a class="jxr_linenumber" name="518" href="#518">518</a> <strong class="jxr_keyword">default</strong>:
+<a class="jxr_linenumber" name="519" href="#519">519</a> <strong class="jxr_keyword">return</strong> false;
+<a class="jxr_linenumber" name="520" href="#520">520</a> }
+<a class="jxr_linenumber" name="521" href="#521">521</a> } <strong class="jxr_keyword">catch</strong> (IOException e) {
+<a class="jxr_linenumber" name="522" href="#522">522</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/omid/transaction/TransactionException.html">TransactionException</a>(<span class="jxr_string">"Failure while checking if a transaction was committed"</span>, e);
+<a class="jxr_linenumber" name="523" href="#523">523</a> }
+<a class="jxr_linenumber" name="524" href="#524">524</a> }
+<a class="jxr_linenumber" name="525" href="#525">525</a>
+<a class="jxr_linenumber" name="526" href="#526">526</a> <strong class="jxr_keyword">static</strong> ImmutableList<Collection<Cell>> groupCellsByColumnFilteringShadowCellsAndFamilyDeletion(List<Cell> rawCells) {
+<a class="jxr_linenumber" name="527" href="#527">527</a>
+<a class="jxr_linenumber" name="528" href="#528">528</a> Predicate<Cell> shadowCellAndFamilyDeletionFilter = <strong class="jxr_keyword">new</strong> Predicate<Cell>() {
+<a class="jxr_linenumber" name="529" href="#529">529</a>
+<a class="jxr_linenumber" name="530" href="#530">530</a> @Override
+<a class="jxr_linenumber" name="531" href="#531">531</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> apply(Cell cell) {
+<a class="jxr_linenumber" name="532" href="#532">532</a> <strong class="jxr_keyword">boolean</strong> familyDeletionMarkerCondition = CellUtils.isFamilyDeleteCell(cell);
+<a class="jxr_linenumber" name="533" href="#533">533</a>
+<a class="jxr_linenumber" name="534" href="#534">534</a> <strong class="jxr_keyword">return</strong> cell != <strong class="jxr_keyword">null</strong> && !CellUtils.isShadowCell(cell) && !familyDeletionMarkerCondition;
+<a class="jxr_linenumber" name="535" href="#535">535</a> }
+<a class="jxr_linenumber" name="536" href="#536">536</a>
+<a class="jxr_linenumber" name="537" href="#537">537</a> };
+<a class="jxr_linenumber" name="538" href="#538">538</a>
+<a class="jxr_linenumber" name="539" href="#539">539</a> Function<Cell, ColumnWrapper> cellToColumnWrapper = <strong class="jxr_keyword">new</strong> Function<Cell, ColumnWrapper>() {
+<a class="jxr_linenumber" name="540" href="#540">540</a>
+<a class="jxr_linenumber" name="541" href="#541">541</a> @Override
+<a class="jxr_linenumber" name="542" href="#542">542</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/omid/transaction/ColumnWrapper.html">ColumnWrapper</a> apply(Cell cell) {
+<a class="jxr_linenumber" name="543" href="#543">543</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/omid/transaction/ColumnWrapper.html">ColumnWrapper</a>(CellUtil.cloneFamily(cell), CellUtil.cloneQualifier(cell));
+<a class="jxr_linenumber" name="544" href="#544">544</a> }
+<a class="jxr_linenumber" name="545" href="#545">545</a>
+<a class="jxr_linenumber" name="546" href="#546">546</a> };
+<a class="jxr_linenumber" name="547" href="#547">547</a>
+<a class="jxr_linenumber" name="548" href="#548">548</a> <strong class="jxr_keyword">return</strong> Multimaps.index(Iterables.filter(rawCells, shadowCellAndFamilyDeletionFilter), cellToColumnWrapper)
+<a class="jxr_linenumber" name="549" href="#549">549</a> .asMap().values()
+<a class="jxr_linenumber" name="550" href="#550">550</a> .asList();
+<a class="jxr_linenumber" name="551" href="#551">551</a> }
+<a class="jxr_linenumber" name="552" href="#552">552</a>
+<a class="jxr_linenumber" name="553" href="#553">553</a>
+<a class="jxr_linenumber" name="554" href="#554">554</a> <strong class="jxr_keyword">static</strong> ImmutableList<Collection<Cell>> groupCellsByColumnFilteringShadowCells(List<Cell> rawCells) {
+<a class="jxr_linenumber" name="555" href="#555">555</a>
+<a class="jxr_linenumber" name="556" href="#556">556</a> Predicate<Cell> shadowCellFilter = <strong class="jxr_keyword">new</strong> Predicate<Cell>() {
+<a class="jxr_linenumber" name="557" href="#557">557</a> @Override
+<a class="jxr_linenumber" name="558" href="#558">558</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> apply(Cell cell) {
+<a class="jxr_linenumber" name="559" href="#559">559</a> <strong class="jxr_keyword">return</strong> cell != <strong class="jxr_keyword">null</strong> && !CellUtils.isShadowCell(cell);
+<a class="jxr_linenumber" name="560" href="#560">560</a> }
+<a class="jxr_linenumber" name="561" href="#561">561</a> };
+<a class="jxr_linenumber" name="562" href="#562">562</a>
+<a class="jxr_linenumber" name="563" href="#563">563</a> Function<Cell, ColumnWrapper> cellToColumnWrapper = <strong class="jxr_keyword">new</strong> Function<Cell, ColumnWrapper>() {
+<a class="jxr_linenumber" name="564" href="#564">564</a>
+<a class="jxr_linenumber" name="565" href="#565">565</a> @Override
+<a class="jxr_linenumber" name="566" href="#566">566</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/omid/transaction/ColumnWrapper.html">ColumnWrapper</a> apply(Cell cell) {
+<a class="jxr_linenumber" name="567" href="#567">567</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/omid/transaction/ColumnWrapper.html">ColumnWrapper</a>(CellUtil.cloneFamily(cell), CellUtil.cloneQualifier(cell));
+<a class="jxr_linenumber" name="568" href="#568">568</a> }
+<a class="jxr_linenumber" name="569" href="#569">569</a>
+<a class="jxr_linenumber" name="570" href="#570">570</a> };
+<a class="jxr_linenumber" name="571" href="#571">571</a>
+<a class="jxr_linenumber" name="572" href="#572">572</a> <strong class="jxr_keyword">return</strong> Multimaps.index(Iterables.filter(rawCells, shadowCellFilter), cellToColumnWrapper)
+<a class="jxr_linenumber" name="573" href="#573">573</a> .asMap().values()
+<a class="jxr_linenumber" name="574" href="#574">574</a> .asList();
+<a class="jxr_linenumber" name="575" href="#575">575</a> }
+<a class="jxr_linenumber" name="576" href="#576">576</a>
+<a class="jxr_linenumber" name="577" href="#577">577</a>
+<a class="jxr_linenumber" name="578" href="#578">578</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/omid/transaction/SnapshotFilterImpl.html">TransactionalClientScanner</a> <strong class="jxr_keyword">implements</strong> ResultScanner {
+<a class="jxr_linenumber" name="579" href="#579">579</a>
+<a class="jxr_linenumber" name="580" href="#580">580</a> <strong class="jxr_keyword">private</strong> <a href="../../../../org/apache/omid/transaction/HBaseTransaction.html">HBaseTransaction</a> state;
+<a class="jxr_linenumber" name="581" href="#581">581</a> <strong class="jxr_keyword">private</strong> ResultScanner innerScanner;
+<a class="jxr_linenumber" name="582" href="#582">582</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> maxVersions;
+<a class="jxr_linenumber" name="583" href="#583">583</a> Map<String, Long> familyDeletionCache;
+<a class="jxr_linenumber" name="584" href="#584">584</a> <strong class="jxr_keyword">private</strong> Map<String,byte[]> attributeMap;
+<a class="jxr_linenumber" name="585" href="#585">585</a>
+<a class="jxr_linenumber" name="586" href="#586">586</a> <a href="../../../../org/apache/omid/transaction/SnapshotFilterImpl.html">TransactionalClientScanner</a>(<a href="../../../../org/apache/omid/transaction/HBaseTransaction.html">HBaseTransaction</a> state, Scan scan, <strong class="jxr_keyword">int</strong> maxVersions)
+<a class="jxr_linenumber" name="587" href="#587">587</a> <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="588" href="#588">588</a> <strong class="jxr_keyword">if</strong> (scan.hasFilter()) {
+<a class="jxr_linenumber" name="589" href="#589">589</a> LOG.warn(<span class="jxr_string">"Client scanner with filter will return un expected results. Use Coprocessor scanning"</span>);
+<a class="jxr_linenumber" name="590" href="#590">590</a> }
+<a class="jxr_linenumber" name="591" href="#591">591</a> <strong class="jxr_keyword">this</strong>.state = state;
+<a class="jxr_linenumber" name="592" href="#592">592</a> <strong class="jxr_keyword">this</strong>.innerScanner = tableAccessWrapper.getScanner(scan);
+<a class="jxr_linenumber" name="593" href="#593">593</a> <strong class="jxr_keyword">this</strong>.maxVersions = maxVersions;
+<a class="jxr_linenumber" name="594" href="#594">594</a> <strong class="jxr_keyword">this</strong>.familyDeletionCache = <strong class="jxr_keyword">new</strong> HashMap<String, Long>();
+<a class="jxr_linenumber" name="595" href="#595">595</a> <strong class="jxr_keyword">this</strong>.attributeMap = scan.getAttributesMap();
+<a class="jxr_linenumber" name="596" href="#596">596</a> }
+<a class="jxr_linenumber" name="597" href="#597">597</a>
+<a class="jxr_linenumber" name="598" href="#598">598</a>
+<a class="jxr_linenumber" name="599" href="#599">599</a> @Override
+<a class="jxr_linenumber" name="600" href="#600">600</a> <strong class="jxr_keyword">public</strong> Result next() <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="601" href="#601">601</a> List<Cell> filteredResult = Collections.emptyList();
+<a class="jxr_linenumber" name="602" href="#602">602</a> <strong class="jxr_keyword">while</strong> (filteredResult.isEmpty()) {
+<a class="jxr_linenumber" name="603" href="#603">603</a> Result result = innerScanner.next();
+<a class="jxr_linenumber" name="604" href="#604">604</a> <strong class="jxr_keyword">if</strong> (result == <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="605" href="#605">605</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="606" href="#606">606</a> }
+<a class="jxr_linenumber" name="607" href="#607">607</a> <strong class="jxr_keyword">if</strong> (!result.isEmpty()) {
+<a class="jxr_linenumber" name="608" href="#608">608</a> filteredResult = filterCellsForSnapshot(result.listCells(), state, maxVersions, familyDeletionCache, attributeMap);
+<a class="jxr_linenumber" name="609" href="#609">609</a> }
+<a class="jxr_linenumber" name="610" href="#610">610</a> }
+<a class="jxr_linenumber" name="611" href="#611">611</a> <strong class="jxr_keyword">return</strong> Result.create(filteredResult);
+<a class="jxr_linenumber" name="612" href="#612">612</a> }
+<a class="jxr_linenumber" name="613" href="#613">613</a>
+<a class="jxr_linenumber" name="614" href="#614">614</a> <em class="jxr_comment">// In principle no need to override, copied from super.next(int) to make</em>
+<a class="jxr_linenumber" name="615" href="#615">615</a> <em class="jxr_comment">// sure it works even if super.next(int)</em>
+<a class="jxr_linenumber" name="616" href="#616">616</a> <em class="jxr_comment">// changes its implementation</em>
+<a class="jxr_linenumber" name="617" href="#617">617</a> @Override
+<a class="jxr_linenumber" name="618" href="#618">618</a> <strong class="jxr_keyword">public</strong> Result[] next(<strong class="jxr_keyword">int</strong> nbRows) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="619" href="#619">619</a> <em class="jxr_comment">// Collect values to be returned here</em>
+<a class="jxr_linenumber" name="620" href="#620">620</a> ArrayList<Result> resultSets = <strong class="jxr_keyword">new</strong> ArrayList<>(nbRows);
+<a class="jxr_linenumber" name="621" href="#621">621</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i < nbRows; i++) {
+<a class="jxr_linenumber" name="622" href="#622">622</a> Result next = next();
+<a class="jxr_linenumber" name="623" href="#623">623</a> <strong class="jxr_keyword">if</strong> (next != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="624" href="#624">624</a> resultSets.add(next);
+<a class="jxr_linenumber" name="625" href="#625">625</a> } <strong class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="626" href="#626">626</a> <strong class="jxr_keyword">break</strong>;
+<a class="jxr_linenumber" name="627" href="#627">627</a> }
+<a class="jxr_linenumber" name="628" href="#628">628</a> }
+<a class="jxr_linenumber" name="629" href="#629">629</a> <strong class="jxr_keyword">return</strong> resultSets.toArray(<strong class="jxr_keyword">new</strong> Result[resultSets.size()]);
+<a class="jxr_linenumber" name="630" href="#630">630</a> }
+<a class="jxr_linenumber" name="631" href="#631">631</a>
+<a class="jxr_linenumber" name="632" href="#632">632</a> @Override
+<a class="jxr_linenumber" name="633" href="#633">633</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> close() {
+<a class="jxr_linenumber" name="634" href="#634">634</a> innerScanner.close();
+<a class="jxr_linenumber" name="635" href="#635">635</a> }
+<a class="jxr_linenumber" name="636" href="#636">636</a>
+<a class="jxr_linenumber" name="637" href="#637">637</a> <em class="jxr_comment">// So that Omid works with both HBase 1.3 and 1.4 without needing</em>
+<a class="jxr_linenumber" name="638" href="#638">638</a> <em class="jxr_comment">// a new profile. Since this doesn't existing in 1.3, we don't</em>
+<a class="jxr_linenumber" name="639" href="#639">639</a> <em class="jxr_comment">// add an @Override for it.</em>
+<a class="jxr_linenumber" name="640" href="#640">640</a> <strong class="jxr_keyword">public</strong> ScanMetrics getScanMetrics() {
+<a class="jxr_linenumber" name="641" href="#641">641</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="642" href="#642">642</a> }
+<a class="jxr_linenumber" name="643" href="#643">643</a>
+<a class="jxr_linenumber" name="644" href="#644">644</a> <em class="jxr_comment">// Same as above</em>
+<a class="jxr_linenumber" name="645" href="#645">645</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> renewLease() {
+<a class="jxr_linenumber" name="646" href="#646">646</a> <strong class="jxr_keyword">return</strong> false;
+<a class="jxr_linenumber" name="647" href="#647">647</a> }
+<a class="jxr_linenumber" name="648" href="#648">648</a>
+<a class="jxr_linenumber" name="649" href="#649">649</a> @Override
+<a class="jxr_linenumber" name="650" href="#650">650</a> <strong class="jxr_keyword">public</strong> Iterator<Result> iterator() {
+<a class="jxr_linenumber" name="651" href="#651">651</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/omid/transaction/SnapshotFilterImpl.html">ResultIterator</a>(<strong class="jxr_keyword">this</strong>);
+<a class="jxr_linenumber" name="652" href="#652">652</a> }
+<a class="jxr_linenumber" name="653" href="#653">653</a>
+<a class="jxr_linenumber" name="654" href="#654">654</a> <em class="jxr_comment">// ------------------------------------------------------------------------------------------------------------</em>
+<a class="jxr_linenumber" name="655" href="#655">655</a> <em class="jxr_comment">// --------------------------------- Helper class for TransactionalClientScanner ------------------------------</em>
+<a class="jxr_linenumber" name="656" href="#656">656</a> <em class="jxr_comment">// ------------------------------------------------------------------------------------------------------------</em>
+<a class="jxr_linenumber" name="657" href="#657">657</a>
+<a class="jxr_linenumber" name="658" href="#658">658</a> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/omid/transaction/SnapshotFilterImpl.html">ResultIterator</a> <strong class="jxr_keyword">implements</strong> Iterator<Result> {
+<a class="jxr_linenumber" name="659" href="#659">659</a>
+<a class="jxr_linenumber" name="660" href="#660">660</a> <a href="../../../../org/apache/omid/transaction/SnapshotFilterImpl.html">TransactionalClientScanner</a> scanner;
+<a class="jxr_linenumber" name="661" href="#661">661</a> Result currentResult;
+<a class="jxr_linenumber" name="662" href="#662">662</a>
+<a class="jxr_linenumber" name="663" href="#663">663</a> <a href="../../../../org/apache/omid/transaction/SnapshotFilterImpl.html">ResultIterator</a>(<a href="../../../../org/apache/omid/transaction/SnapshotFilterImpl.html">TransactionalClientScanner</a> scanner) {
+<a class="jxr_linenumber" name="664" href="#664">664</a> <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="665" href="#665">665</a> <strong class="jxr_keyword">this</strong>.scanner = scanner;
+<a class="jxr_linenumber" name="666" href="#666">666</a> currentResult = scanner.next();
+<a class="jxr_linenumber" name="667" href="#667">667</a> } <strong class="jxr_keyword">catch</strong> (IOException e) {
+<a class="jxr_linenumber" name="668" href="#668">668</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> RuntimeException(e);
+<a class="jxr_linenumber" name="669" href="#669">669</a> }
+<a class="jxr_linenumber" name="670" href="#670">670</a> }
+<a class="jxr_linenumber" name="671" href="#671">671</a>
+<a class="jxr_linenumber" name="672" href="#672">672</a> @Override
+<a class="jxr_linenumber" name="673" href="#673">673</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> hasNext() {
+<a class="jxr_linenumber" name="674" href="#674">674</a> <strong class="jxr_keyword">return</strong> currentResult != <strong class="jxr_keyword">null</strong> && !currentResult.isEmpty();
+<a class="jxr_linenumber" name="675" href="#675">675</a> }
+<a class="jxr_linenumber" name="676" href="#676">676</a>
+<a class="jxr_linenumber" name="677" href="#677">677</a> @Override
+<a class="jxr_linenumber" name="678" href="#678">678</a> <strong class="jxr_keyword">public</strong> Result next() {
+<a class="jxr_linenumber" name="679" href="#679">679</a> <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="680" href="#680">680</a> Result result = currentResult;
+<a class="jxr_linenumber" name="681" href="#681">681</a> currentResult = scanner.next();
+<a class="jxr_linenumber" name="682" href="#682">682</a> <strong class="jxr_keyword">return</strong> result;
+<a class="jxr_linenumber" name="683" href="#683">683</a> } <strong class="jxr_keyword">catch</strong> (IOException e) {
+<a class="jxr_linenumber" name="684" href="#684">684</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> RuntimeException(e);
+<a class="jxr_linenumber" name="685" href="#685">685</a> }
+<a cl
<TRUNCATED>