VladRodionov commented on a change in pull request #623: HBASE-22749:
Distributed MOB compactions
URL: https://github.com/apache/hbase/pull/623#discussion_r339200463
##########
File path:
hbase-server/src/main/java/org/apache/hadoop/hbase/mob/DefaultMobStoreCompactor.java
##########
@@ -183,105 +270,166 @@ protected boolean performCompaction(FileDetails fd,
InternalScanner scanner, Cel
boolean hasMore;
Path path = MobUtils.getMobFamilyPath(conf, store.getTableName(),
store.getColumnFamilyName());
byte[] fileName = null;
- StoreFileWriter mobFileWriter = null, delFileWriter = null;
- long mobCells = 0, deleteMarkersCount = 0;
+ StoreFileWriter mobFileWriter = null;
+ long mobCells = 0;
long cellsCountCompactedToMob = 0, cellsCountCompactedFromMob = 0;
long cellsSizeCompactedToMob = 0, cellsSizeCompactedFromMob = 0;
boolean finished = false;
+
ScannerContext scannerContext =
ScannerContext.newBuilder().setBatchLimit(compactionKVMax).build();
throughputController.start(compactionName);
- KeyValueScanner kvs = (scanner instanceof KeyValueScanner)?
(KeyValueScanner)scanner : null;
- long shippedCallSizeLimit = (long) numofFilesToCompact *
this.store.getColumnFamilyDescriptor().getBlocksize();
+ KeyValueScanner kvs = (scanner instanceof KeyValueScanner) ?
(KeyValueScanner) scanner : null;
+ long shippedCallSizeLimit =
+ (long) numofFilesToCompact *
this.store.getColumnFamilyDescriptor().getBlocksize();
+
+ MobCell mobCell = null;
try {
try {
// If the mob file writer could not be created, directly write the
cell to the store file.
mobFileWriter = mobStore.createWriterInTmp(new Date(fd.latestPutTs),
fd.maxKeyCount,
compactionCompression, store.getRegionInfo().getStartKey(), true);
fileName = Bytes.toBytes(mobFileWriter.getPath().getName());
} catch (IOException e) {
- LOG.warn("Failed to create mob writer, "
- + "we will continue the compaction by writing MOB cells
directly in store files", e);
+ // Bailing out
+ LOG.error("Failed to create mob writer, ", e);
+ throw e;
}
- if (major) {
- try {
- delFileWriter = mobStore.createDelFileWriterInTmp(new
Date(fd.latestPutTs),
- fd.maxKeyCount, compactionCompression,
store.getRegionInfo().getStartKey());
- } catch (IOException e) {
- LOG.warn(
- "Failed to create del writer, "
- + "we will continue the compaction by writing delete markers
directly in store files",
- e);
- }
+ if (compactMOBs) {
+ // Add the only reference we get for compact MOB case
+ // because new store file will have only one MOB reference
+ // in this case - of newly compacted MOB file
+ mobRefSet.get().add(mobFileWriter.getPath().getName());
}
do {
hasMore = scanner.next(cells, scannerContext);
if (LOG.isDebugEnabled()) {
now = EnvironmentEdgeManager.currentTime();
}
for (Cell c : cells) {
- if (major && CellUtil.isDelete(c)) {
- if (MobUtils.isMobReferenceCell(c) || delFileWriter == null) {
- // Directly write it to a store file
- writer.append(c);
+
+ if (compactMOBs) {
+ if (MobUtils.isMobReferenceCell(c)) {
+ String fName = MobUtils.getMobFileName(c);
+ Path pp = new Path(new Path(fs.getUri()), new Path(path, fName));
+
+ // Added to support migration
+ try {
+ mobCell = mobStore.resolve(c, true, false);
+ } catch (FileNotFoundException fnfe) {
+ if (discardMobMiss) {
+ LOG.error("Missing MOB cell: file=" + pp + " not found");
Review comment:
Fixed.
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