diff --git a/testing/regress/ecl/key/parquet_size.xml b/testing/regress/ecl/key/parquet_size.xml
index 1f907304176..95c91fc2c89 100644
--- a/testing/regress/ecl/key/parquet_size.xml
+++ b/testing/regress/ecl/key/parquet_size.xml
@@ -1,154 +1,10 @@
-<Dataset name='small_dataset'>
- <Row><id>1</id><name>B</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>2</id><name>C</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>3</id><name>D</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>4</id><name>E</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>5</id><name>F</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>6</id><name>G</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>7</id><name>H</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>8</id><name>I</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>9</id><name>J</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>10</id><name>A</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>11</id><name>B</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>12</id><name>C</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>13</id><name>D</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>14</id><name>E</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>15</id><name>F</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>16</id><name>G</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>17</id><name>H</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>18</id><name>I</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>19</id><name>J</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>20</id><name>A</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>21</id><name>B</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>22</id><name>C</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>23</id><name>D</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>24</id><name>E</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>25</id><name>F</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>26</id><name>G</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>27</id><name>H</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>28</id><name>I</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>29</id><name>J</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>30</id><name>A</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>31</id><name>B</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>32</id><name>C</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>33</id><name>D</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>34</id><name>E</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>35</id><name>F</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>36</id><name>G</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>37</id><name>H</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>38</id><name>I</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>39</id><name>J</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>40</id><name>A</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>41</id><name>B</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>42</id><name>C</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>43</id><name>D</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>44</id><name>E</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>45</id><name>F</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>46</id><name>G</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>47</id><name>H</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>48</id><name>I</name><price>10.0</price><isactive>1</isactive></Row>
- <Row><id>49</id><name>J</name><price>10.0</price><isactive>0</isactive></Row>
- <Row><id>50</id><name>A</name><price>10.0</price><isactive>1</isactive></Row>
+<Dataset name='singleDataset'>
+ <Row><id>1</id><name>Alice</name><price>10.5</price><isactive>yes</isactive></Row>
+ <Row><id>2</id><name>Bob</name><price>20.75</price><isactive>no</isactive></Row>
+ <Row><id>3</id><name>Charlie</name><price>15.25</price><isactive>yes</isactive></Row>
 </Dataset>
-<Dataset name='large_dataset'>
- <Row><id>1</id><name>B</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>2</id><name>C</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>3</id><name>D</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>4</id><name>E</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>5</id><name>F</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>6</id><name>G</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>7</id><name>H</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>8</id><name>I</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>9</id><name>J</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>10</id><name>A</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>11</id><name>B</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>12</id><name>C</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>13</id><name>D</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>14</id><name>E</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>15</id><name>F</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>16</id><name>G</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>17</id><name>H</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>18</id><name>I</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>19</id><name>J</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>20</id><name>A</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>21</id><name>B</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>22</id><name>C</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>23</id><name>D</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>24</id><name>E</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>25</id><name>F</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>26</id><name>G</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>27</id><name>H</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>28</id><name>I</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>29</id><name>J</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>30</id><name>A</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>31</id><name>B</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>32</id><name>C</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>33</id><name>D</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>34</id><name>E</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>35</id><name>F</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>36</id><name>G</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>37</id><name>H</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>38</id><name>I</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>39</id><name>J</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>40</id><name>A</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>41</id><name>B</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>42</id><name>C</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>43</id><name>D</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>44</id><name>E</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>45</id><name>F</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>46</id><name>G</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>47</id><name>H</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>48</id><name>I</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>49</id><name>J</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>50</id><name>A</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>51</id><name>B</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>52</id><name>C</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>53</id><name>D</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>54</id><name>E</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>55</id><name>F</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>56</id><name>G</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>57</id><name>H</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>58</id><name>I</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>59</id><name>J</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>60</id><name>A</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>61</id><name>B</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>62</id><name>C</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>63</id><name>D</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>64</id><name>E</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>65</id><name>F</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>66</id><name>G</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>67</id><name>H</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>68</id><name>I</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>69</id><name>J</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>70</id><name>A</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>71</id><name>B</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>72</id><name>C</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>73</id><name>D</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>74</id><name>E</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>75</id><name>F</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>76</id><name>G</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>77</id><name>H</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>78</id><name>I</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>79</id><name>J</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>80</id><name>A</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>81</id><name>B</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>82</id><name>C</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>83</id><name>D</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>84</id><name>E</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>85</id><name>F</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>86</id><name>G</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>87</id><name>H</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>88</id><name>I</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>89</id><name>J</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>90</id><name>A</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>91</id><name>B</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>92</id><name>C</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>93</id><name>D</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>94</id><name>E</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>95</id><name>F</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>96</id><name>G</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>97</id><name>H</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>98</id><name>I</name><price>20.0</price><isactive>1</isactive></Row>
- <Row><id>99</id><name>J</name><price>20.0</price><isactive>0</isactive></Row>
- <Row><id>100</id><name>A</name><price>20.0</price><isactive>1</isactive></Row>
+<Dataset name='multiDataset'>
+ <Row><id>3</id><name>Charlie</name><price>15.25</price><isactive>yes</isactive></Row>
+ <Row><id>2</id><name>Bob</name><price>20.75</price><isactive>no</isactive></Row>
+ <Row><id>1</id><name>Alice</name><price>10.5</price><isactive>yes</isactive></Row>
 </Dataset>
diff --git a/testing/regress/ecl/parquet_size.ecl b/testing/regress/ecl/parquet_size.ecl
index 75b7508d52d..73652523c23 100644
--- a/testing/regress/ecl/parquet_size.ecl
+++ b/testing/regress/ecl/parquet_size.ecl
@@ -22,19 +22,16 @@ recordLayout := RECORD
     STRING isactive;
 END;
 
-smallFilePath := '/var/lib/HPCCSystems/mydropzone/small1.parquet';
-mediumFilePath := '/var/lib/HPCCSystems/mydropzone/medium1.parquet';
+// Paths to the files
+singleFilePath := '/var/lib/HPCCSystems/mydropzone/single.parquet';
+multiFilePath := '/var/lib/HPCCSystems/mydropzone/multi*.parquet';  // wildcard for all 3 parts
 
-smallDataset := ParquetIO.Read(recordLayout, smallFilePath);
-largeDataset := ParquetIO.Read(recordLayout, mediumFilePath);
-
-largeDatasetPart1 := largeDataset[1..33];
-largeDatasetPart2 := largeDataset[34..66];
-largeDatasetPart3 := largeDataset[67..100];
-
-combinedLargeDataset := largeDatasetPart1 + largeDatasetPart2 + largeDatasetPart3;
+// Reading the single and multi-part files
+singleDataset := ParquetIO.Read(recordLayout, singleFilePath);
+multiDataset := ParquetIO.Read(recordLayout, multiFilePath);
 
+// Output the datasets
 SEQUENTIAL(
-    OUTPUT(smallDataset, NAMED('small_dataset')),
-    OUTPUT(combinedLargeDataset, NAMED('large_dataset'))
+    OUTPUT(singleDataset, NAMED('singleDataset')),  // Output for the single file
+    OUTPUT(multiDataset, NAMED('multiDataset'))     // Output for the combined multi-part files
 );