/**
* recoverTransitionRead for a specific block pool
*
* @param datanode DataNode
* @param bpID Block pool Id
* @param nsInfo Namespace info of namenode corresponding to the block pool
* @param dataDirs Storage directories
* @param startOpt startup option
* @throws IOException on error
*/
void recoverTransitionRead(
DataNode datanode,
String bpID,
NamespaceInfo nsInfo,
Collection<File> dataDirs,
StartupOption startOpt)
throws IOException {
// First ensure datanode level format/snapshot/rollback is completed
recoverTransitionRead(datanode, nsInfo, dataDirs, startOpt);
// Create list of storage directories for the block pool
Collection<File> bpDataDirs = new ArrayList<File>();
for (Iterator<File> it = dataDirs.iterator(); it.hasNext(); ) {
File dnRoot = it.next();
File bpRoot = BlockPoolSliceStorage.getBpRoot(bpID, new File(dnRoot, STORAGE_DIR_CURRENT));
bpDataDirs.add(bpRoot);
}
// mkdir for the list of BlockPoolStorage
makeBlockPoolDataDir(bpDataDirs, null);
BlockPoolSliceStorage bpStorage =
new BlockPoolSliceStorage(
nsInfo.getNamespaceID(), bpID, nsInfo.getCTime(), nsInfo.getClusterID());
bpStorage.recoverTransitionRead(datanode, nsInfo, bpDataDirs, startOpt);
addBlockPoolStorage(bpID, bpStorage);
}
