/** Removes index infos older than {@link #maxAge} from this history. */
void pruneOutdated() {
long threshold = System.currentTimeMillis() - maxAge;
log.debug("Pruning index infos older than: " + threshold + "(" + indexDir + ")");
Iterator<IndexInfos> it = indexInfosMap.values().iterator();
// never prune the current generation
if (it.hasNext()) {
IndexInfos infos = it.next();
log.debug("Skipping first index infos. generation=" + infos.getGeneration());
}
while (it.hasNext()) {
IndexInfos infos = (IndexInfos) it.next();
if (infos.getLastModified() < threshold) {
// check associated redo log
try {
String logName = getRedoLogName(infos.getGeneration());
if (indexDir.fileExists(logName)) {
long lastModified = indexDir.fileModified(logName);
if (lastModified > threshold) {
log.debug(
"Keeping redo log with generation={}, timestamp={}",
infos.getGeneration(),
lastModified);
continue;
}
// try do delete it
try {
indexDir.deleteFile(logName);
log.debug(
"Deleted redo log with generation={}, timestamp={}",
infos.getGeneration(),
lastModified);
} catch (IOException e) {
log.warn("Unable to delete: " + indexDir + "/" + logName);
continue;
}
}
// delete index infos
try {
indexDir.deleteFile(infos.getFileName());
log.debug("Deleted index infos with generation={}", infos.getGeneration());
it.remove();
} catch (IOException e) {
log.warn("Unable to delete: " + indexDir + "/" + infos.getFileName());
}
} catch (IOException e) {
log.warn("Failed to check if {} is outdated: {}", infos.getFileName(), e);
}
}
}
}
/*
* Test a deletion policy that keeps last N commits.
*/
public void testKeepLastNDeletionPolicy() throws IOException {
final int N = 5;
for (int pass = 0; pass < 2; pass++) {
boolean useCompoundFile = (pass % 2) != 0;
Directory dir = newDirectory();
if (dir instanceof MockDirectoryWrapper) {
// test manually deletes files
((MockDirectoryWrapper) dir).setEnableVirusScanner(false);
}
KeepLastNDeletionPolicy policy = new KeepLastNDeletionPolicy(N);
for (int j = 0; j < N + 1; j++) {
IndexWriterConfig conf =
newIndexWriterConfig(new MockAnalyzer(random()))
.setOpenMode(OpenMode.CREATE)
.setIndexDeletionPolicy(policy)
.setMaxBufferedDocs(10);
MergePolicy mp = conf.getMergePolicy();
mp.setNoCFSRatio(useCompoundFile ? 1.0 : 0.0);
IndexWriter writer = new IndexWriter(dir, conf);
policy = (KeepLastNDeletionPolicy) writer.getConfig().getIndexDeletionPolicy();
for (int i = 0; i < 17; i++) {
addDoc(writer);
}
writer.forceMerge(1);
writer.close();
}
assertTrue(policy.numDelete > 0);
assertEquals(N + 1, policy.numOnInit);
assertEquals(N + 1, policy.numOnCommit);
// Simplistic check: just verify only the past N segments_N's still
// exist, and, I can open a reader on each:
long gen = SegmentInfos.getLastCommitGeneration(dir);
for (int i = 0; i < N + 1; i++) {
try {
IndexReader reader = DirectoryReader.open(dir);
reader.close();
if (i == N) {
fail("should have failed on commits prior to last " + N);
}
} catch (IOException e) {
if (i != N) {
throw e;
}
}
if (i < N) {
dir.deleteFile(IndexFileNames.fileNameFromGeneration(IndexFileNames.SEGMENTS, "", gen));
}
gen--;
}
dir.close();
}
}
final void finishCommit(Directory dir) throws IOException {
if (pendingSegnOutput == null) throw new IllegalStateException("prepareCommit was not called");
boolean success = false;
try {
pendingSegnOutput.finishCommit();
pendingSegnOutput.close();
pendingSegnOutput = null;
success = true;
} finally {
if (!success) rollbackCommit(dir);
}
// NOTE: if we crash here, we have left a segments_N
// file in the directory in a possibly corrupt state (if
// some bytes made it to stable storage and others
// didn't). But, the segments_N file includes checksum
// at the end, which should catch this case. So when a
// reader tries to read it, it will throw a
// CorruptIndexException, which should cause the retry
// logic in SegmentInfos to kick in and load the last
// good (previous) segments_N-1 file.
final String fileName =
IndexFileNames.fileNameFromGeneration(IndexFileNames.SEGMENTS, "", generation);
success = false;
try {
dir.sync(Collections.singleton(fileName));
success = true;
} finally {
if (!success) {
try {
dir.deleteFile(fileName);
} catch (Throwable t) {
// Suppress so we keep throwing the original exception
}
}
}
lastGeneration = generation;
try {
IndexOutput genOutput = dir.createOutput(IndexFileNames.SEGMENTS_GEN);
try {
genOutput.writeInt(FORMAT_LOCKLESS);
genOutput.writeLong(generation);
genOutput.writeLong(generation);
} finally {
genOutput.close();
}
} catch (ThreadInterruptedException t) {
throw t;
} catch (Throwable t) {
// It's OK if we fail to write this file since it's
// used only as one of the retry fallbacks.
}
}
private final void write(Directory directory) throws IOException {
String segmentFileName = getNextSegmentFileName();
// Always advance the generation on write:
if (generation == -1) {
generation = 1;
} else {
generation++;
}
ChecksumIndexOutput segnOutput =
new ChecksumIndexOutput(directory.createOutput(segmentFileName));
boolean success = false;
try {
segnOutput.writeInt(CURRENT_FORMAT); // write FORMAT
segnOutput.writeLong(version);
segnOutput.writeInt(counter); // write counter
segnOutput.writeInt(size()); // write infos
for (SegmentInfo si : this) {
si.write(segnOutput);
}
segnOutput.writeStringStringMap(userData);
segnOutput.prepareCommit();
pendingSegnOutput = segnOutput;
success = true;
} finally {
if (!success) {
// We hit an exception above; try to close the file
// but suppress any exception:
IOUtils.closeSafely(true, segnOutput);
try {
// Try not to leave a truncated segments_N file in
// the index:
directory.deleteFile(segmentFileName);
} catch (Throwable t) {
// Suppress so we keep throwing the original exception
}
}
}
}
/**
* closes temporary file, compresses data and removes temporary file.
*
* @throws IOException
*/
@Override
public void close() throws IOException {
byte[] buffer = new byte[chunkSize];
tempOut.close();
// directory with offsets offsets of compressed chunks with
// real position in decompressed stream
IndexInput in = tempDirectory.openInput(tmpName);
long len = closeLength = in.length();
// write length of the file at the begining for easier retreval
output.writeLong(-1);
// write configuration
writeConfig();
int toRead;
// read all data and compresse it in variable block chunks
while (len > 0) {
if (len > buffer.length) {
toRead = buffer.length;
} else {
toRead = (int) len;
}
// just for safety --- can be improoved
long bufferPos = in.getFilePointer();
// read original data
in.readBytes(buffer, 0, toRead);
writeChunk(buffer, bufferPos, toRead);
len -= toRead;
}
// now let's crate directory entry of all chunks and their's original
// position in inflated stream
in.close();
if (tempDirectory.fileExists(tmpName)) {
tempDirectory.deleteFile(tmpName);
}
super.close();
}
final void rollbackCommit(Directory dir) throws IOException {
if (pendingSegnOutput != null) {
try {
pendingSegnOutput.close();
} catch (Throwable t) {
// Suppress so we keep throwing the original exception
// in our caller
}
// Must carefully compute fileName from "generation"
// since lastGeneration isn't incremented:
try {
final String segmentFileName =
IndexFileNames.fileNameFromGeneration(IndexFileNames.SEGMENTS, "", generation);
dir.deleteFile(segmentFileName);
} catch (Throwable t) {
// Suppress so we keep throwing the original exception
// in our caller
}
pendingSegnOutput = null;
}
}
/*
* Test a deletion policy that keeps last N commits
* around, through creates.
*/
public void testKeepLastNDeletionPolicyWithCreates() throws IOException {
final int N = 10;
for (int pass = 0; pass < 2; pass++) {
boolean useCompoundFile = (pass % 2) != 0;
Directory dir = newDirectory();
if (dir instanceof MockDirectoryWrapper) {
// test manually deletes files
((MockDirectoryWrapper) dir).setEnableVirusScanner(false);
}
IndexWriterConfig conf =
newIndexWriterConfig(new MockAnalyzer(random()))
.setOpenMode(OpenMode.CREATE)
.setIndexDeletionPolicy(new KeepLastNDeletionPolicy(N))
.setMaxBufferedDocs(10);
MergePolicy mp = conf.getMergePolicy();
mp.setNoCFSRatio(useCompoundFile ? 1.0 : 0.0);
IndexWriter writer = new IndexWriter(dir, conf);
KeepLastNDeletionPolicy policy =
(KeepLastNDeletionPolicy) writer.getConfig().getIndexDeletionPolicy();
writer.close();
Term searchTerm = new Term("content", "aaa");
Query query = new TermQuery(searchTerm);
for (int i = 0; i < N + 1; i++) {
conf =
newIndexWriterConfig(new MockAnalyzer(random()))
.setOpenMode(OpenMode.APPEND)
.setIndexDeletionPolicy(policy)
.setMaxBufferedDocs(10);
mp = conf.getMergePolicy();
mp.setNoCFSRatio(useCompoundFile ? 1.0 : 0.0);
writer = new IndexWriter(dir, conf);
policy = (KeepLastNDeletionPolicy) writer.getConfig().getIndexDeletionPolicy();
for (int j = 0; j < 17; j++) {
addDocWithID(writer, i * (N + 1) + j);
}
// this is a commit
writer.close();
conf =
new IndexWriterConfig(new MockAnalyzer(random()))
.setIndexDeletionPolicy(policy)
.setMergePolicy(NoMergePolicy.INSTANCE);
writer = new IndexWriter(dir, conf);
policy = (KeepLastNDeletionPolicy) writer.getConfig().getIndexDeletionPolicy();
writer.deleteDocuments(new Term("id", "" + (i * (N + 1) + 3)));
// this is a commit
writer.close();
IndexReader reader = DirectoryReader.open(dir);
IndexSearcher searcher = newSearcher(reader);
ScoreDoc[] hits = searcher.search(query, 1000).scoreDocs;
assertEquals(16, hits.length);
reader.close();
writer =
new IndexWriter(
dir,
newIndexWriterConfig(new MockAnalyzer(random()))
.setOpenMode(OpenMode.CREATE)
.setIndexDeletionPolicy(policy));
policy = (KeepLastNDeletionPolicy) writer.getConfig().getIndexDeletionPolicy();
// This will not commit: there are no changes
// pending because we opened for "create":
writer.close();
}
assertEquals(3 * (N + 1) + 1, policy.numOnInit);
assertEquals(3 * (N + 1) + 1, policy.numOnCommit);
IndexReader rwReader = DirectoryReader.open(dir);
IndexSearcher searcher = newSearcher(rwReader);
ScoreDoc[] hits = searcher.search(query, 1000).scoreDocs;
assertEquals(0, hits.length);
// Simplistic check: just verify only the past N segments_N's still
// exist, and, I can open a reader on each:
long gen = SegmentInfos.getLastCommitGeneration(dir);
int expectedCount = 0;
rwReader.close();
for (int i = 0; i < N + 1; i++) {
try {
IndexReader reader = DirectoryReader.open(dir);
// Work backwards in commits on what the expected
// count should be.
searcher = newSearcher(reader);
hits = searcher.search(query, 1000).scoreDocs;
assertEquals(expectedCount, hits.length);
if (expectedCount == 0) {
expectedCount = 16;
} else if (expectedCount == 16) {
expectedCount = 17;
} else if (expectedCount == 17) {
expectedCount = 0;
}
reader.close();
if (i == N) {
fail("should have failed on commits before last " + N);
}
} catch (IOException e) {
if (i != N) {
throw e;
}
}
if (i < N) {
dir.deleteFile(IndexFileNames.fileNameFromGeneration(IndexFileNames.SEGMENTS, "", gen));
}
gen--;
}
dir.close();
}
}
/*
* Test a silly deletion policy that keeps all commits around.
*/
public void testKeepAllDeletionPolicy() throws IOException {
for (int pass = 0; pass < 2; pass++) {
if (VERBOSE) {
System.out.println("TEST: cycle pass="******"TEST: open writer for forceMerge");
}
writer = new IndexWriter(dir, conf);
policy = (KeepAllDeletionPolicy) writer.getConfig().getIndexDeletionPolicy();
writer.forceMerge(1);
writer.close();
}
assertEquals(needsMerging ? 2 : 1, policy.numOnInit);
// If we are not auto committing then there should
// be exactly 2 commits (one per close above):
assertEquals(1 + (needsMerging ? 1 : 0), policy.numOnCommit);
// Test listCommits
Collection<IndexCommit> commits = DirectoryReader.listCommits(dir);
// 2 from closing writer
assertEquals(1 + (needsMerging ? 1 : 0), commits.size());
// Make sure we can open a reader on each commit:
for (final IndexCommit commit : commits) {
IndexReader r = DirectoryReader.open(commit);
r.close();
}
// Simplistic check: just verify all segments_N's still
// exist, and, I can open a reader on each:
long gen = SegmentInfos.getLastCommitGeneration(dir);
while (gen > 0) {
IndexReader reader = DirectoryReader.open(dir);
reader.close();
dir.deleteFile(IndexFileNames.fileNameFromGeneration(IndexFileNames.SEGMENTS, "", gen));
gen--;
if (gen > 0) {
// Now that we've removed a commit point, which
// should have orphan'd at least one index file.
// Open & close a writer and assert that it
// actually removed something:
int preCount = dir.listAll().length;
writer =
new IndexWriter(
dir,
newIndexWriterConfig(new MockAnalyzer(random()))
.setOpenMode(OpenMode.APPEND)
.setIndexDeletionPolicy(policy));
writer.close();
int postCount = dir.listAll().length;
assertTrue(postCount < preCount);
}
}
dir.close();
}
}
/*
* Test "by time expiration" deletion policy:
*/
public void testExpirationTimeDeletionPolicy() throws IOException, InterruptedException {
final double SECONDS = 2.0;
Directory dir = newDirectory();
if (dir instanceof MockDirectoryWrapper) {
// test manually deletes files
((MockDirectoryWrapper) dir).setEnableVirusScanner(false);
}
IndexWriterConfig conf =
newIndexWriterConfig(new MockAnalyzer(random()))
.setIndexDeletionPolicy(new ExpirationTimeDeletionPolicy(dir, SECONDS));
MergePolicy mp = conf.getMergePolicy();
mp.setNoCFSRatio(1.0);
IndexWriter writer = new IndexWriter(dir, conf);
ExpirationTimeDeletionPolicy policy =
(ExpirationTimeDeletionPolicy) writer.getConfig().getIndexDeletionPolicy();
Map<String, String> commitData = new HashMap<>();
commitData.put("commitTime", String.valueOf(System.currentTimeMillis()));
writer.setCommitData(commitData);
writer.commit();
writer.close();
long lastDeleteTime = 0;
final int targetNumDelete = TestUtil.nextInt(random(), 1, 5);
while (policy.numDelete < targetNumDelete) {
// Record last time when writer performed deletes of
// past commits
lastDeleteTime = System.currentTimeMillis();
conf =
newIndexWriterConfig(new MockAnalyzer(random()))
.setOpenMode(OpenMode.APPEND)
.setIndexDeletionPolicy(policy);
mp = conf.getMergePolicy();
mp.setNoCFSRatio(1.0);
writer = new IndexWriter(dir, conf);
policy = (ExpirationTimeDeletionPolicy) writer.getConfig().getIndexDeletionPolicy();
for (int j = 0; j < 17; j++) {
addDoc(writer);
}
commitData = new HashMap<>();
commitData.put("commitTime", String.valueOf(System.currentTimeMillis()));
writer.setCommitData(commitData);
writer.commit();
writer.close();
Thread.sleep((int) (1000.0 * (SECONDS / 5.0)));
}
// Then simplistic check: just verify that the
// segments_N's that still exist are in fact within SECONDS
// seconds of the last one's mod time, and, that I can
// open a reader on each:
long gen = SegmentInfos.getLastCommitGeneration(dir);
String fileName = IndexFileNames.fileNameFromGeneration(IndexFileNames.SEGMENTS, "", gen);
boolean oneSecondResolution = true;
while (gen > 0) {
try {
IndexReader reader = DirectoryReader.open(dir);
reader.close();
fileName = IndexFileNames.fileNameFromGeneration(IndexFileNames.SEGMENTS, "", gen);
// if we are on a filesystem that seems to have only
// 1 second resolution, allow +1 second in commit
// age tolerance:
SegmentInfos sis = SegmentInfos.readCommit(dir, fileName);
long modTime = Long.parseLong(sis.getUserData().get("commitTime"));
oneSecondResolution &= (modTime % 1000) == 0;
final long leeway = (long) ((SECONDS + (oneSecondResolution ? 1.0 : 0.0)) * 1000);
assertTrue(
"commit point was older than "
+ SECONDS
+ " seconds ("
+ (lastDeleteTime - modTime)
+ " msec) but did not get deleted ",
lastDeleteTime - modTime <= leeway);
} catch (IOException e) {
// OK
break;
}
dir.deleteFile(IndexFileNames.fileNameFromGeneration(IndexFileNames.SEGMENTS, "", gen));
gen--;
}
dir.close();
}
public static void deleteDirectoryContents(Directory directory) throws IOException {
for (String fileName : directory.listAll()) directory.deleteFile(fileName);
}
@Test(enabled = false)
public void testReadChunks() throws Exception {
final int BUFFER_SIZE = 64;
Cache cache = cacheManager.getCache();
Directory dir =
DirectoryBuilder.newDirectoryInstance(cache, cache, cache, INDEXNAME)
.chunkSize(BUFFER_SIZE)
.create();
// create file headers
FileMetadata file1 = new FileMetadata(5);
FileCacheKey key1 = new FileCacheKey(INDEXNAME, "Hello.txt");
cache.put(key1, file1);
FileMetadata file2 = new FileMetadata(5);
FileCacheKey key2 = new FileCacheKey(INDEXNAME, "World.txt");
cache.put(key2, file2);
// byte array for Hello.txt
String helloText = "Hello world. This is some text.";
cache.put(new ChunkCacheKey(INDEXNAME, "Hello.txt", 0, BUFFER_SIZE), helloText.getBytes());
// byte array for World.txt - should be in at least 2 chunks.
String worldText =
"This String should contain more than sixty four characters but less than one hundred and twenty eight.";
assert worldText.getBytes().length > BUFFER_SIZE;
assert worldText.getBytes().length < (2 * BUFFER_SIZE);
byte[] buf = new byte[BUFFER_SIZE];
System.arraycopy(worldText.getBytes(), 0, buf, 0, BUFFER_SIZE);
cache.put(new ChunkCacheKey(INDEXNAME, "World.txt", 0, BUFFER_SIZE), buf);
String part1 = new String(buf);
buf = new byte[BUFFER_SIZE];
System.arraycopy(worldText.getBytes(), BUFFER_SIZE, buf, 0, worldText.length() - BUFFER_SIZE);
cache.put(new ChunkCacheKey(INDEXNAME, "World.txt", 1, BUFFER_SIZE), buf);
String part2 = new String(buf);
// make sure the generated bytes do add up!
AssertJUnit.assertEquals(part1 + part2.trim(), worldText);
file1.setSize(helloText.length());
file2.setSize(worldText.length());
Set<String> s = new HashSet<String>();
s.add("Hello.txt");
s.add("World.txt");
Set other = new HashSet(Arrays.asList(dir.listAll()));
// ok, file listing works.
AssertJUnit.assertEquals(s, other);
IndexInput ii = dir.openInput("Hello.txt");
assert ii.length() == helloText.length();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
for (int i = 0; i < ii.length(); i++) {
baos.write(ii.readByte());
}
assert new String(baos.toByteArray()).equals(helloText);
ii = dir.openInput("World.txt");
assert ii.length() == worldText.length();
baos = new ByteArrayOutputStream();
for (int i = 0; i < ii.length(); i++) {
baos.write(ii.readByte());
}
assert new String(baos.toByteArray()).equals(worldText);
// now with buffered reading
ii = dir.openInput("Hello.txt");
assert ii.length() == helloText.length();
baos = new ByteArrayOutputStream();
long toRead = ii.length();
while (toRead > 0) {
buf = new byte[19]; // suitably arbitrary
int bytesRead = (int) Math.min(toRead, 19);
ii.readBytes(buf, 0, bytesRead);
toRead = toRead - bytesRead;
baos.write(buf, 0, bytesRead);
}
assert new String(baos.toByteArray()).equals(helloText);
ii = dir.openInput("World.txt");
assert ii.length() == worldText.length();
baos = new ByteArrayOutputStream();
toRead = ii.length();
while (toRead > 0) {
buf = new byte[19]; // suitably arbitrary
int bytesRead = (int) Math.min(toRead, 19);
ii.readBytes(buf, 0, bytesRead);
toRead = toRead - bytesRead;
baos.write(buf, 0, bytesRead);
}
assert new String(baos.toByteArray()).equals(worldText);
dir.deleteFile("Hello.txt");
assert null == cache.get(new FileCacheKey(INDEXNAME, "Hello.txt"));
assert null == cache.get(new ChunkCacheKey(INDEXNAME, "Hello.txt", 0, BUFFER_SIZE));
Object ob1 = cache.get(new FileCacheKey(INDEXNAME, "World.txt"));
Object ob2 = cache.get(new ChunkCacheKey(INDEXNAME, "World.txt", 0, BUFFER_SIZE));
Object ob3 = cache.get(new ChunkCacheKey(INDEXNAME, "World.txt", 1, BUFFER_SIZE));
((DirectoryExtensions) dir).renameFile("World.txt", "HelloWorld.txt");
assert null == cache.get(new FileCacheKey(INDEXNAME, "Hello.txt"));
assert null == cache.get(new ChunkCacheKey(INDEXNAME, "Hello.txt", 0, BUFFER_SIZE));
assert null == cache.get(new ChunkCacheKey(INDEXNAME, "Hello.txt", 1, BUFFER_SIZE));
assert cache.get(new FileCacheKey(INDEXNAME, "HelloWorld.txt")).equals(ob1);
assert cache.get(new ChunkCacheKey(INDEXNAME, "HelloWorld.txt", 0, BUFFER_SIZE)).equals(ob2);
assert cache.get(new ChunkCacheKey(INDEXNAME, "HelloWorld.txt", 1, BUFFER_SIZE)).equals(ob3);
// test that contents survives a move
ii = dir.openInput("HelloWorld.txt");
assert ii.length() == worldText.length();
baos = new ByteArrayOutputStream();
toRead = ii.length();
while (toRead > 0) {
buf = new byte[19]; // suitably arbitrary
int bytesRead = (int) Math.min(toRead, 19);
ii.readBytes(buf, 0, bytesRead);
toRead = toRead - bytesRead;
baos.write(buf, 0, bytesRead);
}
assert new String(baos.toByteArray()).equals(worldText);
dir.close();
DirectoryIntegrityCheck.verifyDirectoryStructure(cache, INDEXNAME);
}
@Override
public void deleteFile(String name) throws IOException {
fsDir.deleteFile(name);
}
private boolean doRestore() throws Exception {
Path backupPath = Paths.get(backupLocation).resolve(backupName);
SimpleDateFormat dateFormat = new SimpleDateFormat(SnapShooter.DATE_FMT, Locale.ROOT);
String restoreIndexName = "restore." + dateFormat.format(new Date());
String restoreIndexPath = core.getDataDir() + restoreIndexName;
Directory restoreIndexDir = null;
Directory indexDir = null;
try (Directory backupDir = FSDirectory.open(backupPath)) {
final Version version =
IndexFetcher.checkOldestVersion(SegmentInfos.readLatestCommit(backupDir));
restoreIndexDir =
core.getDirectoryFactory()
.get(
restoreIndexPath,
DirectoryFactory.DirContext.DEFAULT,
core.getSolrConfig().indexConfig.lockType);
// Prefer local copy.
indexDir =
core.getDirectoryFactory()
.get(
core.getIndexDir(),
DirectoryFactory.DirContext.DEFAULT,
core.getSolrConfig().indexConfig.lockType);
// Move all files from backupDir to restoreIndexDir
for (String filename : backupDir.listAll()) {
checkInterrupted();
log.info("Copying file {} to restore directory ", filename);
try (IndexInput indexInput = backupDir.openInput(filename, IOContext.READONCE)) {
Long checksum = null;
try {
checksum = CodecUtil.retrieveChecksum(indexInput);
} catch (Exception e) {
log.warn("Could not read checksum from index file: " + filename, e);
}
long length = indexInput.length();
IndexFetcher.CompareResult compareResult =
IndexFetcher.compareFile(indexDir, version, filename, length, checksum);
if (!compareResult.equal
|| (!compareResult.checkSummed
&& (filename.endsWith(".si")
|| filename.endsWith(".liv")
|| filename.startsWith("segments_")))) {
restoreIndexDir.copyFrom(backupDir, filename, filename, IOContext.READONCE);
} else {
// prefer local copy
restoreIndexDir.copyFrom(indexDir, filename, filename, IOContext.READONCE);
}
} catch (Exception e) {
throw new SolrException(
SolrException.ErrorCode.UNKNOWN, "Exception while restoring the backup index", e);
}
}
log.debug("Switching directories");
IndexFetcher.modifyIndexProps(core, restoreIndexName);
boolean success;
try {
core.getUpdateHandler().newIndexWriter(false);
openNewSearcher();
success = true;
log.info("Successfully restored to the backup index");
} catch (Exception e) {
// Rollback to the old index directory. Delete the restore index directory and mark the
// restore as failed.
log.warn("Could not switch to restored index. Rolling back to the current index");
Directory dir = null;
try {
dir =
core.getDirectoryFactory()
.get(
core.getDataDir(),
DirectoryFactory.DirContext.META_DATA,
core.getSolrConfig().indexConfig.lockType);
dir.deleteFile(IndexFetcher.INDEX_PROPERTIES);
} finally {
if (dir != null) {
core.getDirectoryFactory().release(dir);
}
}
core.getDirectoryFactory().doneWithDirectory(restoreIndexDir);
core.getDirectoryFactory().remove(restoreIndexDir);
core.getUpdateHandler().newIndexWriter(false);
openNewSearcher();
throw new SolrException(
SolrException.ErrorCode.UNKNOWN, "Exception while restoring the backup index", e);
}
if (success) {
core.getDirectoryFactory().doneWithDirectory(indexDir);
core.getDirectoryFactory().remove(indexDir);
}
return true;
} finally {
if (restoreIndexDir != null) {
core.getDirectoryFactory().release(restoreIndexDir);
}
if (indexDir != null) {
core.getDirectoryFactory().release(indexDir);
}
}
}