/**
* Recreates a SolrCore. While the new core is loading, requests will continue to be dispatched to
* and processed by the old core
*
* @param name the name of the SolrCore to reload
*/
public void reload(String name) {
SolrCore core = solrCores.getCoreFromAnyList(name, false);
if (core == null)
throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "No such core: " + name);
CoreDescriptor cd = core.getCoreDescriptor();
try {
solrCores.waitAddPendingCoreOps(name);
ConfigSet coreConfig = coreConfigService.getConfig(cd);
log.info(
"Reloading SolrCore '{}' using configuration from {}",
cd.getName(),
coreConfig.getName());
SolrCore newCore = core.reload(coreConfig);
registerCore(name, newCore, false);
} catch (SolrCoreState.CoreIsClosedException e) {
throw e;
} catch (Exception e) {
coreInitFailures.put(cd.getName(), new CoreLoadFailure(cd, e));
throw new SolrException(
ErrorCode.SERVER_ERROR, "Unable to reload core [" + cd.getName() + "]", e);
} finally {
solrCores.removeFromPendingOps(name);
}
}
/**
* Gets a core by name and increase its refcount.
*
* @see SolrCore#close()
* @param name the core name
* @return the core if found, null if a SolrCore by this name does not exist
* @exception SolrException if a SolrCore with this name failed to be initialized
*/
public SolrCore getCore(String name) {
// Do this in two phases since we don't want to lock access to the cores over a load.
SolrCore core = solrCores.getCoreFromAnyList(name, true);
if (core != null) {
return core;
}
// OK, it's not presently in any list, is it in the list of dynamic cores but not loaded yet? If
// so, load it.
CoreDescriptor desc = solrCores.getDynamicDescriptor(name);
if (desc == null) { // Nope, no transient core with this name
// if there was an error initializing this core, throw a 500
// error with the details for clients attempting to access it.
CoreLoadFailure loadFailure = getCoreInitFailures().get(name);
if (null != loadFailure) {
throw new SolrException(
ErrorCode.SERVER_ERROR,
"SolrCore '"
+ name
+ "' is not available due to init failure: "
+ loadFailure.exception.getMessage(),
loadFailure.exception);
}
// otherwise the user is simply asking for something that doesn't exist.
return null;
}
// This will put an entry in pending core ops if the core isn't loaded
core = solrCores.waitAddPendingCoreOps(name);
if (isShutDown)
return null; // We're quitting, so stop. This needs to be after the wait above since we may
// come off
// the wait as a consequence of shutting down.
try {
if (core == null) {
if (zkSys.getZkController() != null) {
zkSys.getZkController().throwErrorIfReplicaReplaced(desc);
}
core = create(desc, true); // This should throw an error if it fails.
}
core.open();
} finally {
solrCores.removeFromPendingOps(name);
}
return core;
}
