Chenghao Jiang created HBASE-8192:
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Summary: wrong logic in HRegion.bulkLoadHFiles(List)
Key: HBASE-8192
URL: https://issues.apache.org/jira/browse/HBASE-8192
Project: HBase
Issue Type: Bug
Components: regionserver
Affects Versions: 0.94.5, 0.94.4, 0.94.3, 0.94.2, 0.94.1
Reporter: Chenghao Jiang
the wrong logic is here:
when a ColumnFamily does not exist, it gets a null store object, then
ioes.add(ioe); failures.add(p)
but the code below, if (failures.size() != 0), it prints a warn log and
return false, so it will never go into the code if (ioes.size() != 0) below,
and IOException will not be thrown, then the client will keeping retry forever.
there is the same situation when doing store.assertBulkLoadHFileOk, if any
WrongRegionException is caught and failures.add(p), then all the other
IOException thrown by assertBulkLoadHFileOk will be ignored.
so i think the sentence " return false " should be removed.
{code}
for (Pair<byte[], String> p : familyPaths) {
byte[] familyName = p.getFirst();
String path = p.getSecond();
Store store = getStore(familyName);
if (store == null) {
IOException ioe = new DoNotRetryIOException(
"No such column family " + Bytes.toStringBinary(familyName));
ioes.add(ioe);
failures.add(p);
} else {
try {
store.assertBulkLoadHFileOk(new Path(path));
} catch (WrongRegionException wre) {
// recoverable (file doesn't fit in region)
failures.add(p);
} catch (IOException ioe) {
// unrecoverable (hdfs problem)
ioes.add(ioe);
}
}
}
// validation failed, bail out before doing anything permanent.
if (failures.size() != 0) {
StringBuilder list = new StringBuilder();
for (Pair<byte[], String> p : failures) {
list.append("\n").append(Bytes.toString(p.getFirst())).append(" : ")
.append(p.getSecond());
}
// problem when validating
LOG.warn("There was a recoverable bulk load failure likely due to a" +
" split. These (family, HFile) pairs were not loaded: " + list);
return false;
}
// validation failed because of some sort of IO problem.
if (ioes.size() != 0) {
LOG.error("There were IO errors when checking if bulk load is ok. " +
"throwing exception!");
throw MultipleIOException.createIOException(ioes);
}
{code}
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