END_TEST
START_TEST(test_addBlock)
{
bool s;
struct hdfs_object *e = NULL, *lb;
const char *tf = "/HADOOFUS_TEST_ADDBLOCK",
*client = "HADOOFUS_CLIENT";
// Create the file first
hdfs_create(h, tf, 0644, client, true/*overwrite*/,
false/*createparent*/, 1/*replication*/, 64*1024*1024, &e);
if (e)
ck_abort_msg("exception: %s", hdfs_exception_get_message(e));
mark_point();
lb = hdfs_addBlock(h, tf, client, NULL, &e);
if (e)
ck_abort_msg("exception: %s", hdfs_exception_get_message(e));
ck_assert(!hdfs_object_is_null(lb));
hdfs_object_free(lb);
mark_point();
// Cleanup
s = hdfs_delete(h, tf, false/*recurse*/, &e);
if (e)
ck_abort_msg("exception: %s", hdfs_exception_get_message(e));
ck_assert_msg(s, "delete returned false");
}
END_TEST
START_TEST(test_abandonBlock)
{
bool s;
struct hdfs_object *e = NULL, *lb, *bl;
const char *tf = "/HADOOFUS_TEST_ABANDONBLOCK",
*client = "HADOOFUS_CLIENT";
// Create the file first
hdfs_create(h, tf, 0644, client, true/*overwrite*/,
false/*createparent*/, 1/*replication*/, 64*1024*1024, &e);
if (e)
ck_abort_msg("exception: %s", hdfs_exception_get_message(e));
mark_point();
// XXX this must be updated to cover v2.0+ (last_block/fileid)
lb = hdfs_addBlock(h, tf, client, NULL, NULL, 0, &e);
if (e)
ck_abort_msg("exception: %s", hdfs_exception_get_message(e));
ck_assert(!hdfs_object_is_null(lb));
mark_point();
bl = hdfs_block_from_located_block(lb);
hdfs_object_free(lb);
mark_point();
hdfs_abandonBlock(h, bl, tf, client, &e);
if (e)
ck_abort_msg("exception: %s", hdfs_exception_get_message(e));
hdfs_object_free(bl);
mark_point();
// Cleanup
s = hdfs_delete(h, tf, false/*recurse*/, &e);
if (e)
ck_abort_msg("exception: %s", hdfs_exception_get_message(e));
ck_assert_msg(s, "delete returned false");
}
// Flushes internal buffer to disk. If passed buf is non-NULL, flushes that
// instead. Returns 0 on succ, -1 on err.
static int
_flush(struct hdfs_namenode *fs, struct hdfsFile_internal *f, const void *buf, size_t len)
{
struct hdfs_object *lb = NULL, *ex = NULL, *excl = NULL, *block = NULL;
struct hdfs_datanode *dn = NULL;
int res = 0, tries = 3;
const char *err = NULL, *msg_fmt;
const char *wbuf = f->fi_wbuf;
size_t wbuf_len = f->fi_wbuf_used;
// Skip the extra copy if the user is feeding us full-sized blocks
if (buf) {
wbuf = buf;
wbuf_len = len;
}
if (!wbuf_len)
goto out;
// For appends, we need to finish the last block
if (f->fi_lastblock) {
lb = f->fi_lastblock;
f->fi_lastblock = NULL;
}
for (; tries > 0; tries--) {
if (!lb) {
lb = hdfs_addBlock(fs, f->fi_path, f->fi_client, excl, &ex);
if (ex) {
ERR(EIO, "addBlock failed: %s", hdfs_exception_get_message(ex));
res = -1;
goto out;
}
if (lb->ob_type == H_NULL) {
ERR(EIO, "addBlock returned bogus null");
res = -1;
goto out;
}
}
msg_fmt = "connect to datanode failed";
dn = hdfs_datanode_new(lb, f->fi_client, HDFS_DATANODE_AP_1_0, &err);
if (!dn)
goto dn_failed;
msg_fmt = "write failed";
err = hdfs_datanode_write(dn, wbuf, wbuf_len, true/*crcs*/);
hdfs_datanode_delete(dn);
if (!err)
break;
dn_failed:
// On failure, either warn and try again, or give up
if (tries == 1) {
ERR(ECONNREFUSED, "%s: %s%s", msg_fmt, err, "");
res = -1;
goto out;
}
WARN("%s: %s%s", msg_fmt, err, ", retrying");
block = hdfs_block_from_located_block(lb);
hdfs_abandonBlock(fs, block, f->fi_path, f->fi_client, &ex);
if (ex) {
ERR(EIO, "abandonBlock failed: %s", hdfs_exception_get_message(ex));
res = -1;
goto out;
}
hdfs_object_free(block);
block = NULL;
// Add physical location of bad block's datanode to excluded
// list
if (lb->ob_val._located_block._num_locs > 0) {
if (!excl)
excl = hdfs_array_datanode_info_new();
hdfs_array_datanode_info_append_datanode_info(
excl,
hdfs_datanode_info_copy(
lb->ob_val._located_block._locs[0]
)
);
}
hdfs_object_free(lb);
lb = NULL;
}
// If we weren't given a user block directly, the internal buf has been
// flushed:
if (!buf)
f->fi_wbuf_used = 0;
out:
if (ex)
hdfs_object_free(ex);
if (lb)
hdfs_object_free(lb);
if (block)
hdfs_object_free(block);
if (excl)
hdfs_object_free(excl);
return res;
}
END_TEST
START_TEST(test_dn_write_file)
{
const char *tf = "/HADOOFUS_TEST_WRITE_FILE",
*client = "HADOOFUS_CLIENT", *err;
bool s;
struct hdfs_datanode *dn;
struct hdfs_object *e = NULL, *bl, *fs, *bls;
uint64_t begin, end;
s = hdfs_delete(h, tf, false/*recurse*/, &e);
if (e)
fail("exception: %s", hdfs_exception_get_message(e));
hdfs_create(h, tf, 0644, client, true/*overwrite*/,
false/*createparent*/, 1/*replication*/, blocksz, &e);
if (e)
fail("exception: %s", hdfs_exception_get_message(e));
begin = _now();
// write first block (full)
bl = hdfs_addBlock(h, tf, client, NULL, &e);
if (e)
fail("exception: %s", hdfs_exception_get_message(e));
dn = hdfs_datanode_new(bl, client, HDFS_DATANODE_AP_1_0, &err);
ck_assert_msg((intptr_t)dn, "error connecting to datanode: %s", err);
hdfs_object_free(bl);
err = hdfs_datanode_write_file(dn, fd, blocksz, 0, _i/*crcs*/);
fail_if(err, "error writing block: %s", err);
hdfs_datanode_delete(dn);
// write second block (partial)
bl = hdfs_addBlock(h, tf, client, NULL, &e);
if (e)
fail("exception: %s", hdfs_exception_get_message(e));
dn = hdfs_datanode_new(bl, client, HDFS_DATANODE_AP_1_0, &err);
ck_assert_msg((intptr_t)dn, "error connecting to datanode: %s", err);
hdfs_object_free(bl);
err = hdfs_datanode_write_file(dn, fd, towrite-blocksz, blocksz, _i/*crcs*/);
fail_if(err, "error writing block: %s", err);
hdfs_datanode_delete(dn);
end = _now();
fprintf(stderr, "Wrote %d MB from file in %ld ms%s, %02g MB/s\n",
towrite/1024/1024, end - begin, _i? " (with crcs)":"",
(double)towrite/(end-begin)/1024*1000/1024);
fs = hdfs_getFileInfo(h, tf, &e);
if (e)
fail("exception: %s", hdfs_exception_get_message(e));
ck_assert(fs->ob_val._file_status._size == towrite);
hdfs_object_free(fs);
s = hdfs_complete(h, tf, client, &e);
if (e)
fail("exception: %s", hdfs_exception_get_message(e));
ck_assert_msg(s, "did not complete");
bls = hdfs_getBlockLocations(h, tf, 0, towrite, &e);
if (e)
fail("exception: %s", hdfs_exception_get_message(e));
begin = _now();
for (int i = 0; i < bls->ob_val._located_blocks._num_blocks; i++) {
struct hdfs_object *bl =
bls->ob_val._located_blocks._blocks[i];
dn = hdfs_datanode_new(bl, client, HDFS_DATANODE_AP_1_0, &err);
ck_assert_msg((intptr_t)dn, "error connecting to datanode: %s", err);
err = hdfs_datanode_read_file(dn, 0/*offset-in-block*/,
bl->ob_val._located_block._len,
ofd,
i*blocksz/*fd offset*/,
_i/*crcs*/);
hdfs_datanode_delete(dn);
if (err == HDFS_DATANODE_ERR_NO_CRCS) {
fprintf(stderr, "Warning: test server doesn't support "
"CRCs, skipping validation.\n");
_i = 0;
// reconnect, try again without validating CRCs (for
// isi_hdfs_d)
dn = hdfs_datanode_new(bl, client, HDFS_DATANODE_AP_1_0, &err);
ck_assert_msg((intptr_t)dn, "error connecting to datanode: %s", err);
err = hdfs_datanode_read_file(dn, 0/*offset-in-block*/,
bl->ob_val._located_block._len,
ofd,
i*blocksz,
false/*crcs*/);
hdfs_datanode_delete(dn);
}
fail_if(err, "error reading block: %s", err);
}
end = _now();
fprintf(stderr, "Read %d MB to file in %ld ms%s, %02g MB/s\n",
towrite/1024/1024, end - begin, _i? " (with crcs)":"",
(double)towrite/(end-begin)/1024*1000/1024);
hdfs_object_free(bls);
fail_if(filecmp(fd, ofd, towrite), "read differed from write");
s = hdfs_delete(h, tf, false/*recurse*/, &e);
if (e)
fail("exception: %s", hdfs_exception_get_message(e));
ck_assert_msg(s, "delete returned false");
}
