@Test
public void testMergeIntermediates() {
// Test Merge
List<IntermediateEntry> intermediateEntries = new ArrayList<IntermediateEntry>();
int[] pageLengths = {
10 * 1024 * 1024, 10 * 1024 * 1024, 10 * 1024 * 1024, 5 * 1024 * 1024
}; // 35 MB
long expectedTotalLength = 0;
for (int i = 0; i < 20; i++) {
List<Pair<Long, Integer>> pages = new ArrayList<Pair<Long, Integer>>();
long offset = 0;
for (int j = 0; j < pageLengths.length; j++) {
pages.add(new Pair(offset, pageLengths[j]));
offset += pageLengths[j];
expectedTotalLength += pageLengths[j];
}
IntermediateEntry interm = new IntermediateEntry(i, -1, -1, new Task.PullHost("" + i, i));
interm.setPages(pages);
interm.setVolume(offset);
intermediateEntries.add(interm);
}
long splitVolume = 128 * 1024 * 1024;
List<List<FetchImpl>> fetches =
Repartitioner.splitOrMergeIntermediates(
null, intermediateEntries, splitVolume, 10 * 1024 * 1024);
assertEquals(6, fetches.size());
int totalInterms = 0;
int index = 0;
int numZeroPosFetcher = 0;
long totalLength = 0;
for (List<FetchImpl> eachFetchList : fetches) {
totalInterms += eachFetchList.size();
long eachFetchVolume = 0;
for (FetchImpl eachFetch : eachFetchList) {
eachFetchVolume += eachFetch.getLength();
if (eachFetch.getOffset() == 0) {
numZeroPosFetcher++;
}
totalLength += eachFetch.getLength();
}
assertTrue(
eachFetchVolume + " should be smaller than splitVolume", eachFetchVolume < splitVolume);
if (index < fetches.size() - 1) {
assertTrue(
eachFetchVolume + " should be great than 100MB", eachFetchVolume >= 100 * 1024 * 1024);
}
index++;
}
assertEquals(23, totalInterms);
assertEquals(20, numZeroPosFetcher);
assertEquals(expectedTotalLength, totalLength);
}
@Test
public void testSplitIntermediatesWithUniqueHost() {
List<IntermediateEntry> intermediateEntries = new ArrayList<IntermediateEntry>();
int[] pageLengths = new int[20]; // 195MB
for (int i = 0; i < pageLengths.length; i++) {
if (i < pageLengths.length - 1) {
pageLengths[i] = 10 * 1024 * 1024;
} else {
pageLengths[i] = 5 * 1024 * 1024;
}
}
long expectedTotalLength = 0;
Task.PullHost pullHost = new Task.PullHost("host", 0);
for (int i = 0; i < 20; i++) {
List<Pair<Long, Integer>> pages = new ArrayList<Pair<Long, Integer>>();
long offset = 0;
for (int j = 0; j < pageLengths.length; j++) {
pages.add(new Pair(offset, pageLengths[j]));
offset += pageLengths[j];
expectedTotalLength += pageLengths[j];
}
IntermediateEntry interm = new IntermediateEntry(i, -1, 0, pullHost);
interm.setPages(pages);
interm.setVolume(offset);
intermediateEntries.add(interm);
}
long splitVolume = 128 * 1024 * 1024;
List<List<FetchImpl>> fetches =
Repartitioner.splitOrMergeIntermediates(
null, intermediateEntries, splitVolume, 10 * 1024 * 1024);
assertEquals(32, fetches.size());
int expectedSize = 0;
Set<FetchImpl> fetchSet = TUtil.newHashSet();
for (List<FetchImpl> list : fetches) {
expectedSize += list.size();
fetchSet.addAll(list);
}
assertEquals(expectedSize, fetchSet.size());
int index = 0;
int numZeroPosFetcher = 0;
long totalLength = 0;
Set<String> uniqPullHost = new HashSet<String>();
for (List<FetchImpl> eachFetchList : fetches) {
long length = 0;
for (FetchImpl eachFetch : eachFetchList) {
if (eachFetch.getOffset() == 0) {
numZeroPosFetcher++;
}
totalLength += eachFetch.getLength();
length += eachFetch.getLength();
uniqPullHost.add(eachFetch.getPullHost().toString());
}
assertTrue(length + " should be smaller than splitVolume", length < splitVolume);
if (index < fetches.size() - 1) {
assertTrue(
length + " should be great than 100MB" + fetches.size() + "," + index,
length >= 100 * 1024 * 1024);
}
index++;
}
assertEquals(20, numZeroPosFetcher);
assertEquals(1, uniqPullHost.size());
assertEquals(expectedTotalLength, totalLength);
}
@Test
public void testSplitIntermediates2() {
long[][] pageDatas = {
{0, 10538717},
{10538717, 10515884},
{21054601, 10514343},
{31568944, 10493988},
{42062932, 10560639},
{52623571, 10548486},
{63172057, 10537811},
{73709868, 10571060},
{84280928, 10515062},
{94795990, 10502964},
{105298954, 10514011},
{115812965, 10532154},
{126345119, 10534133},
{136879252, 10549749},
{147429001, 10566547},
{157995548, 10543700},
{168539248, 10490324},
{179029572, 10500720},
{189530292, 10505425},
{200035717, 10548418},
{210584135, 10562887},
{221147022, 10554967},
{231701989, 10507297},
{242209286, 10515612},
{252724898, 10491274},
{263216172, 10512956},
{273729128, 10490736},
{284219864, 10501878},
{294721742, 10564568},
{305286310, 10488896},
{315775206, 10516308},
{326291514, 10517965},
{336809479, 10487038},
{347296517, 10603472},
{357899989, 10507330},
{368407319, 10549429},
{378956748, 10533443},
{389490191, 10530852},
{400021043, 11036431},
{411057474, 10541007},
{421598481, 10600477},
{432198958, 10519805},
{442718763, 10500769},
{453219532, 10507192},
{463726724, 10540424},
{474267148, 10509129},
{484776277, 10527100},
{495303377, 10720789},
{506024166, 10568542},
{516592708, 11046886},
{527639594, 10580358},
{538219952, 10508940},
{548728892, 10523968},
{559252860, 10580626},
{569833486, 10539361},
{580372847, 10496662},
{590869509, 10505280},
{601374789, 10564655},
{611939444, 10505842},
{622445286, 10523889},
{632969175, 10553186},
{643522361, 10535866},
{654058227, 10501796},
{664560023, 10530358},
{675090381, 10585340},
{685675721, 10602017},
{696277738, 10546614},
{706824352, 10511511},
{717335863, 11019221},
{728355084, 10558143},
{738913227, 10516245},
{749429472, 10502613},
{759932085, 10522145},
{770454230, 10489373},
{780943603, 10520973},
{791464576, 11021218},
{802485794, 10496362},
{812982156, 10502354},
{823484510, 10515932},
{834000442, 10591044},
{844591486, 5523957}
};
List<IntermediateEntry> entries = new ArrayList<IntermediateEntry>();
for (int i = 0; i < 2; i++) {
List<Pair<Long, Integer>> pages = new ArrayList<Pair<Long, Integer>>();
for (int j = 0; j < pageDatas.length; j++) {
pages.add(new Pair(pageDatas[j][0], (int) (pageDatas[j][1])));
}
IntermediateEntry entry =
new IntermediateEntry(-1, -1, 1, new Task.PullHost("host" + i, 9000));
entry.setPages(pages);
entries.add(entry);
}
long splitVolume = 256 * 1024 * 1024;
List<List<FetchImpl>> fetches =
Repartitioner.splitOrMergeIntermediates(null, entries, splitVolume, 10 * 1024 * 1024);
long[][] expected = {
{0, 263216172},
{263216172, 264423422},
{527639594, 263824982},
{791464576, 58650867},
{0, 200035717},
{200035717, 263691007},
{463726724, 264628360},
{728355084, 121760359},
};
int index = 0;
for (List<FetchImpl> eachFetchList : fetches) {
if (index == 3) {
assertEquals(2, eachFetchList.size());
} else {
assertEquals(1, eachFetchList.size());
}
for (FetchImpl eachFetch : eachFetchList) {
assertEquals(expected[index][0], eachFetch.getOffset());
assertEquals(expected[index][1], eachFetch.getLength());
index++;
}
}
}